diff --git a/boards/native/board_config.c b/boards/native/board_config.c
index dafdf747aac99db460c7d2bb3ea62f920fed02bf..9b8d1a49ff12a02940d428322b3ccae67c2d7135 100644
--- a/boards/native/board_config.c
+++ b/boards/native/board_config.c
@@ -5,7 +5,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU General Public
+ * This file is subject to the terms and conditions of the GNU General Public
  * License. See the file LICENSE in the top level directory for more details.
  *
  * @ingroup native_board
diff --git a/boards/native/board_init.c b/boards/native/board_init.c
index 0abc01573c6dfa18c55b7a3c3271955f54c57ed4..2080850b894c6dfed08c5cab54b078f9fcd251a0 100644
--- a/boards/native/board_init.c
+++ b/boards/native/board_init.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU General Public
+ * This file is subject to the terms and conditions of the GNU General Public
  * License. See the file LICENSE in the top level directory for more details.
  *
  * @ingroup native_board
diff --git a/boards/native/drivers/native-led.c b/boards/native/drivers/native-led.c
index 7f9296d7c3fdbe786e1274b7b1ef5ca28d03ce61..efe934fb349381b1a8c6b3e7c4fba172dc2b6b3f 100644
--- a/boards/native/drivers/native-led.c
+++ b/boards/native/drivers/native-led.c
@@ -5,7 +5,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU General Public
+ * This file is subject to the terms and conditions of the GNU General Public
  * License. See the file LICENSE in the top level directory for more details.
  *
  * @ingroup native_board
diff --git a/boards/native/drivers/native-ltc4150.c b/boards/native/drivers/native-ltc4150.c
index babe801616bafd72e13da4d58c6413a5397f72a7..f34a7fe9e34eba5f67d197085b3b7e62f38fef9e 100644
--- a/boards/native/drivers/native-ltc4150.c
+++ b/boards/native/drivers/native-ltc4150.c
@@ -6,7 +6,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU General Public
+ * This file is subject to the terms and conditions of the GNU General Public
  * License. See the file LICENSE in the top level directory for more details.
  *
  * @ingroup native_board
diff --git a/boards/native/include/board.h b/boards/native/include/board.h
index f1dca63e6a96589a49d2c20a58d391da7a047d6e..bd34b7dc6093422b1d2556f2e745a48c1f9743c2 100644
--- a/boards/native/include/board.h
+++ b/boards/native/include/board.h
@@ -8,7 +8,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU General Public
+ * This file is subject to the terms and conditions of the GNU General Public
  * License. See the file LICENSE in the top level directory for more details.
  *
  * @defgroup native_board
diff --git a/boards/telosb/board.c b/boards/telosb/board.c
index 37b21b4caaa3e1f2f0f97b7cc29d88c8c864d39c..3a95186452afb37834bb8ca8020795985fb31c60 100644
--- a/boards/telosb/board.c
+++ b/boards/telosb/board.c
@@ -2,7 +2,7 @@
    * board.c - Board initiazilation for the TelosB
    * Copyright (C) 2013 Oliver Hahm <oliver.hahm@inria.fr>
    *
-   * This file subject to the terms and conditions of the LGPLv2. See the file
+   * This file is subject to the terms and conditions of the LGPLv2. See the file
    * LICENSE in the  top level directory for more details.
    */
 
diff --git a/boards/telosb/uart.c b/boards/telosb/uart.c
index 1e97bfb569715401d35288b6163d044cab7f1f73..f38aa5c3a212c2238b9b052b1cfc9ab4232bae6d 100644
--- a/boards/telosb/uart.c
+++ b/boards/telosb/uart.c
@@ -2,7 +2,7 @@
  * uart.c - Implementation for the TelosB UART
  * Copyright (C) 2013 Oliver Hahm <oliver.hahm@inria.fr>
  *
- * This file subject to the terms and conditions of the LGPLv2. See the file
+ * This file is subject to the terms and conditions of the LGPLv2. See the file
  * LICENSE in the top level directory for more details.
  */
 
diff --git a/core/bitarithm.c b/core/bitarithm.c
index e43d97b80810fd6d891c23acfb92c482002337ba..94c8e9efd94f77b6756258934d57f95d0f66d12c 100644
--- a/core/bitarithm.c
+++ b/core/bitarithm.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/clist.c b/core/clist.c
index f8f6c25588a4ebecd153198bd85d3b94e949a775..8f9895cf1cf2e154eee0d7f5469475b6e76e40a4 100644
--- a/core/clist.c
+++ b/core/clist.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/hwtimer.c b/core/hwtimer.c
index 4d1b1805b021c2c908f4563a8fd5d025c5376cbb..ff1700e830ddb37999f86eeab277c29bfeef88a7 100644
--- a/core/hwtimer.c
+++ b/core/hwtimer.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/include/atomic.h b/core/include/atomic.h
index ec91164e16689b3efe841cd557975d94355483b7..f657b456a4ec658a03935cf0a90f5f23287c9dc6 100644
--- a/core/include/atomic.h
+++ b/core/include/atomic.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/include/bitarithm.h b/core/include/bitarithm.h
index 1bca83acb1f17f6454d7e4026a31a1744a4de6a9..44538985666359b26fcdc0b81f1da5794dab7d3c 100644
--- a/core/include/bitarithm.h
+++ b/core/include/bitarithm.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/include/clist.h b/core/include/clist.h
index f9a8d6496cbd8dc5f8b97aa8f5e64cbf4688e632..a0d82a2867aa0b7ae1ec2adb3acb4a147639b125 100644
--- a/core/include/clist.h
+++ b/core/include/clist.h
@@ -5,7 +5,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/include/debug.h b/core/include/debug.h
index c26c3dae1e6aefae9c74c41b71fb3e0adc50f687..fafe2abc8c7cbc9ef152b0e1b6131a93ad708707 100644
--- a/core/include/debug.h
+++ b/core/include/debug.h
@@ -5,7 +5,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/include/flags.h b/core/include/flags.h
index f2185946d0920ce401aaac13dea30de3e9e1b9c1..10ab0538c67de058ad3580b043cc628014b13738 100644
--- a/core/include/flags.h
+++ b/core/include/flags.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/include/hwtimer.h b/core/include/hwtimer.h
index 61b628682ff042a53949b64386ac0bf346080034..c262aa1af93910579211f7fddeae62f5978e18f4 100644
--- a/core/include/hwtimer.h
+++ b/core/include/hwtimer.h
@@ -22,7 +22,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  */
diff --git a/core/include/hwtimer_arch.h b/core/include/hwtimer_arch.h
index 71da45bf33ccb7ebe981b5e854c6fdd24c3c0d70..233f95ed77e78b053567acbbac6c44b6674c63d8 100644
--- a/core/include/hwtimer_arch.h
+++ b/core/include/hwtimer_arch.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/include/kernel.h b/core/include/kernel.h
index ae3ea892b0205092d25a92708d4f43daf2ab18e1..fb819eb92768d5bfd257e222c210f2edf9d3bc10 100644
--- a/core/include/kernel.h
+++ b/core/include/kernel.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/kernel_init.c b/core/kernel_init.c
index 15f15f2ad1f9bc540287376f6e7ad4e35c770cf8..d9ac0093a93a3422c4bf03cab244f2f65403dde7 100644
--- a/core/kernel_init.c
+++ b/core/kernel_init.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/msg.c b/core/msg.c
index 40846fe0f40dbf148191158014a09a97756f0d12..eb86e21363c02c46200430e9a4c2ebe7a9ebdf06 100644
--- a/core/msg.c
+++ b/core/msg.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/mutex.c b/core/mutex.c
index 0def398b49831614b025ba850749cdef98bc7f7e..2e1dc1a101f45f6751f2b1b3b6a6e2d6d5a0de7d 100644
--- a/core/mutex.c
+++ b/core/mutex.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/oneway_malloc.c b/core/oneway_malloc.c
index c8e8fd5c2eda74aa7969937491519dbaa3fbe101..bc314717a113074f4a763a5c6368d22b47cd0857 100644
--- a/core/oneway_malloc.c
+++ b/core/oneway_malloc.c
@@ -5,7 +5,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/queue.c b/core/queue.c
index 0783a95aaa8e194d3b1b192d825a16e57e0f1de4..6b34f372880ee20185262a4a6995099567cff9c1 100644
--- a/core/queue.c
+++ b/core/queue.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/sched.c b/core/sched.c
index 9a3de8b451c146726c700f8ed7c2c766c456829f..5012778e484a03cc33d7b2de7f2681f64fb98aae 100644
--- a/core/sched.c
+++ b/core/sched.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/core/thread.c b/core/thread.c
index bce35739431fbddba965b874f65a4184bb68f425..0ca8106c86a7133ae2b6ce80dd6f4b87d9d55449 100644
--- a/core/thread.c
+++ b/core/thread.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/arm_common/VIC.c b/cpu/arm_common/VIC.c
index aadbfbf60c203be478c4e07c42b823c879e80d33..6226a4b1515ddb81399a5dccf7215e6136cb2fb2 100644
--- a/cpu/arm_common/VIC.c
+++ b/cpu/arm_common/VIC.c
@@ -1,7 +1,7 @@
 /* Copyright (C) 2005, 2006, 2007, 2008 by Thomas Hillebrandt and Heiko Will
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/arm_common/arm_cpu.c b/cpu/arm_common/arm_cpu.c
index 83acd681f90a5921ced6603badb3c6169cc2900b..eae4f6d5af656cdcf84a9f11266529d7673a25fe 100644
--- a/cpu/arm_common/arm_cpu.c
+++ b/cpu/arm_common/arm_cpu.c
@@ -4,7 +4,7 @@
  * Copyright (C) 2008, 2009  Heiko Will <hwill@inf.fu-berlin.de>
  * Copyright (C) 2009  Kaspar Schleiser <kaspar@schleiser.de>
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/arm_common/bootloader.c b/cpu/arm_common/bootloader.c
index 8601fa04620736ce80229967827f582fbe8a7b6a..14813ae8bb2f30d5774faa236f71fa21ceda4fb6 100644
--- a/cpu/arm_common/bootloader.c
+++ b/cpu/arm_common/bootloader.c
@@ -5,7 +5,7 @@
 
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/arm_common/include/VIC.h b/cpu/arm_common/include/VIC.h
index 8d2c42a456b7bb82be4765f005627b72ee19661a..2b61585cdf5e41c815c1dd114c69f7d4d1790d19 100644
--- a/cpu/arm_common/include/VIC.h
+++ b/cpu/arm_common/include/VIC.h
@@ -1,7 +1,7 @@
 /* Copyright (C) 2005, 2006, 2007, 2008 by Thomas Hillebrandt and Heiko Will
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/arm_common/include/arm_common.h b/cpu/arm_common/include/arm_common.h
index 2aed13e7ead00e131cce246d33b666026ae2c05e..a9f686a2e4a6c9fcd2a7636e65d3ed60dabe39cc 100644
--- a/cpu/arm_common/include/arm_common.h
+++ b/cpu/arm_common/include/arm_common.h
@@ -6,7 +6,7 @@
  * -------------------------------------------------------------------------------
  * This file is part of RIOT.
 
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/cc430/cc430-gpioint.c b/cpu/cc430/cc430-gpioint.c
index bdc1fb4c5d1db7ece91df6fdf5c6c36b7c3af93c..11f7bf49ceef60969957f9e41ca51fa3fc33fb15 100644
--- a/cpu/cc430/cc430-gpioint.c
+++ b/cpu/cc430/cc430-gpioint.c
@@ -7,7 +7,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/cc430/cc430-rtc.c b/cpu/cc430/cc430-rtc.c
index 879f05350098aa507dafc2b4d115e52dba15eab8..bfedcbe0e657eeff9631ee1c622689f3ffdedc2e 100644
--- a/cpu/cc430/cc430-rtc.c
+++ b/cpu/cc430/cc430-rtc.c
@@ -7,7 +7,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/cc430/include/cc430-rtc.h b/cpu/cc430/include/cc430-rtc.h
index 4bfab5953703e68135bed3e09c5c026ccbf01551..0fb871d916a5647ae211d34e5443bfa51212c37e 100644
--- a/cpu/cc430/include/cc430-rtc.h
+++ b/cpu/cc430/include/cc430-rtc.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/lpc2387/cpu.c b/cpu/lpc2387/cpu.c
index 69050cf2ad4ecb06e5e58b9b6b5123cf4d4acac7..0ade906bdd431b713a34293eea43906d40fda82c 100644
--- a/cpu/lpc2387/cpu.c
+++ b/cpu/lpc2387/cpu.c
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/lpc2387/gpioint/lpc2387-gpioint.c b/cpu/lpc2387/gpioint/lpc2387-gpioint.c
index d7362f14d1412dabeb57b5f11e9e2513174f5491..59454bae27e0a31427aab05025e0f45d5841dd55 100644
--- a/cpu/lpc2387/gpioint/lpc2387-gpioint.c
+++ b/cpu/lpc2387/gpioint/lpc2387-gpioint.c
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/lpc2387/include/cpu-conf.h b/cpu/lpc2387/include/cpu-conf.h
index 9ae31d465865e80bee6acbdb31a52402f9c44acc..c325fd3d9c871923a241ce289caff59a66989b57 100644
--- a/cpu/lpc2387/include/cpu-conf.h
+++ b/cpu/lpc2387/include/cpu-conf.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/lpc2387/include/cpu.h b/cpu/lpc2387/include/cpu.h
index 8f770db2dde80b545b33c31b0cabf22fcbdbab19..072b1ff47d3599384735cd6f31a18fac475e7ceb 100644
--- a/cpu/lpc2387/include/cpu.h
+++ b/cpu/lpc2387/include/cpu.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/lpc2387/include/lpc2387-adc.h b/cpu/lpc2387/include/lpc2387-adc.h
index a6da16be63f932a823de22c55f4789c768af3168..7f4c91fb6c7f36e51aa716dd4baaff203a2ed652 100644
--- a/cpu/lpc2387/include/lpc2387-adc.h
+++ b/cpu/lpc2387/include/lpc2387-adc.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/lpc2387/include/lpc2387-rtc.h b/cpu/lpc2387/include/lpc2387-rtc.h
index caa3f2f5f9fe5e1876271131d39410c357ddab7f..d60c05ee6bbe7f6ca11ec174a5bc1958e178d345 100644
--- a/cpu/lpc2387/include/lpc2387-rtc.h
+++ b/cpu/lpc2387/include/lpc2387-rtc.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/lpc2387/lpc2387-adc.c b/cpu/lpc2387/lpc2387-adc.c
index 9a07269d64d250360d97c086df93a0b2bd285678..89482c50ac51598eaf5cc37e84df843cee4b7df2 100644
--- a/cpu/lpc2387/lpc2387-adc.c
+++ b/cpu/lpc2387/lpc2387-adc.c
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/lpc2387/lpc2387-lpm.c b/cpu/lpc2387/lpc2387-lpm.c
index 41da5d5efb1092deb4bcafa672b2f3af5602462b..e338fb40a2c2669d6396e6f1eed6536335fbbe33 100644
--- a/cpu/lpc2387/lpc2387-lpm.c
+++ b/cpu/lpc2387/lpc2387-lpm.c
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/lpc2387/rtc/lpc2387-rtc.c b/cpu/lpc2387/rtc/lpc2387-rtc.c
index bcbe35c23d404129f97a8be187c70c416e9cfc90..9e72f63ac56c18944779e5118591ddc9ddb0c803 100644
--- a/cpu/lpc2387/rtc/lpc2387-rtc.c
+++ b/cpu/lpc2387/rtc/lpc2387-rtc.c
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/msp430-common/cpu.c b/cpu/msp430-common/cpu.c
index 291ef83da165f7cb3f59a020fccf29ccf68bb2dd..3613131d8d22b54578af898e50d95d2d15a631eb 100644
--- a/cpu/msp430-common/cpu.c
+++ b/cpu/msp430-common/cpu.c
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 #ifdef CC430
diff --git a/cpu/msp430-common/hwtimer_cpu.c b/cpu/msp430-common/hwtimer_cpu.c
index b0d7ba9d7bd2a51f73e4b81b05150ded0ef02f4d..651ac685dfff98539f3cd215a82ee0bac7af4a6f 100644
--- a/cpu/msp430-common/hwtimer_cpu.c
+++ b/cpu/msp430-common/hwtimer_cpu.c
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/msp430-common/include/cpu-conf.h b/cpu/msp430-common/include/cpu-conf.h
index f042302aad013815ab3e09cec5ced0fea0f434ad..e07cfd6746b1d2c3a943fa4c29bb3cd05363cb1e 100644
--- a/cpu/msp430-common/include/cpu-conf.h
+++ b/cpu/msp430-common/include/cpu-conf.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/msp430-common/include/cpu.h b/cpu/msp430-common/include/cpu.h
index 0063ad4ca2e3b909fcdc041d1047fda111124451..d1583c925d5acef365658783221bb0f7a68ef82e 100644
--- a/cpu/msp430-common/include/cpu.h
+++ b/cpu/msp430-common/include/cpu.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/msp430-common/include/hwtimer_cpu.h b/cpu/msp430-common/include/hwtimer_cpu.h
index deff34dbccb19629eecd97299492fa17ba75d3d4..8d132b054fc77ae512430259195f1710ff1ffb3b 100644
--- a/cpu/msp430-common/include/hwtimer_cpu.h
+++ b/cpu/msp430-common/include/hwtimer_cpu.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
 -------------------------------------------------------------------------------
 This file is part of RIOT.
 
-This file subject to the terms and conditions of the GNU Lesser General Public
+This file is subject to the terms and conditions of the GNU Lesser General Public
 License. See the file LICENSE in the top level directory for more details.
 *******************************************************************************/
 
diff --git a/cpu/native/atomic_cpu.c b/cpu/native/atomic_cpu.c
index 289e7e71ace8acec502267e0513667579b02dd34..99645cbdffd2d8ffa265425a97205548025f44f7 100644
--- a/cpu/native/atomic_cpu.c
+++ b/cpu/native/atomic_cpu.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/native/hwtimer_cpu.c b/cpu/native/hwtimer_cpu.c
index 338d67e7e43e23cb3c54c4c47fda30a8e242336b..45e70f4b12374252b633b54a7478f0ffd19762a1 100644
--- a/cpu/native/hwtimer_cpu.c
+++ b/cpu/native/hwtimer_cpu.c
@@ -9,7 +9,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/native/include/cpu-conf.h b/cpu/native/include/cpu-conf.h
index 60240c08bd536b2077f878c085372288ef246d8c..c9153275dd292ee07bfe6c931129c009e5f58839 100644
--- a/cpu/native/include/cpu-conf.h
+++ b/cpu/native/include/cpu-conf.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/native/include/cpu.h b/cpu/native/include/cpu.h
index 37a449c3736b12d8b7c14d0ef09ab067c1c3e8ec..2b4e59654a2418a1d9ba60c554994e41740a1c1f 100644
--- a/cpu/native/include/cpu.h
+++ b/cpu/native/include/cpu.h
@@ -5,7 +5,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  */
diff --git a/cpu/native/include/hwtimer_cpu.h b/cpu/native/include/hwtimer_cpu.h
index 88876ed7ef913239ce922e955944aa76f966bf67..32afd3feb3c55c295c44cc4ae241a392eec7a511 100644
--- a/cpu/native/include/hwtimer_cpu.h
+++ b/cpu/native/include/hwtimer_cpu.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/native/include/nativenet.h b/cpu/native/include/nativenet.h
index 25c75f6e4e12cad6dd9d7f996eb948096887d0fa..184604002f6c4e05c828ab5d6a81ed274d2b7dca 100644
--- a/cpu/native/include/nativenet.h
+++ b/cpu/native/include/nativenet.h
@@ -10,7 +10,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  */
diff --git a/cpu/native/include/nativenet_internal.h b/cpu/native/include/nativenet_internal.h
index ea7f4b02041d2da51473bb5e973585989afd44a4..80879203a87b83e2c25bf14d30105524c62971e2 100644
--- a/cpu/native/include/nativenet_internal.h
+++ b/cpu/native/include/nativenet_internal.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  */
diff --git a/cpu/native/include/tap.h b/cpu/native/include/tap.h
index 28d642233a0ccaa51d0edfb01f88185dc51acf7b..719c0b351b750b6d315315fdc81917627fabd105 100644
--- a/cpu/native/include/tap.h
+++ b/cpu/native/include/tap.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  */
diff --git a/cpu/native/irq_cpu.c b/cpu/native/irq_cpu.c
index f05eb618c29b95b4fe1e0bdfdd6c19df89c4df77..b4b8026deee6acf2d8c9fa215a915d95a2f8bc23 100644
--- a/cpu/native/irq_cpu.c
+++ b/cpu/native/irq_cpu.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/native/lpm_cpu.c b/cpu/native/lpm_cpu.c
index f2737fed01d1804ff97ba2aef4b27c2824b68413..90a82265ebfa98ad562a8fcce0a463e7d81b6240 100644
--- a/cpu/native/lpm_cpu.c
+++ b/cpu/native/lpm_cpu.c
@@ -5,7 +5,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/native/native_cpu.c b/cpu/native/native_cpu.c
index 4f342cd7e6a56d6a8f71d1c970dc5d0e47044068..ef269dc9245615588d129805e91f1ec4e494107d 100644
--- a/cpu/native/native_cpu.c
+++ b/cpu/native/native_cpu.c
@@ -6,7 +6,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/native/net/interface.c b/cpu/native/net/interface.c
index a3af8a49e6a0f05fbfe7e9034ec8ccf3aa7a3876..13d4aa27861a722665e0e52182fadaa58a4f5d42 100644
--- a/cpu/native/net/interface.c
+++ b/cpu/native/net/interface.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/native/net/tap.c b/cpu/native/net/tap.c
index b36f831322cbe145f3c27c73cd645db99f281f77..d4be66bd0a05f43801ba0740c39ef62492ab088f 100644
--- a/cpu/native/net/tap.c
+++ b/cpu/native/net/tap.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/native/rtc/posix-rtc.c b/cpu/native/rtc/posix-rtc.c
index 748bf991a47e1f8f014cdacf32315603779cb777..d532afdcc402cb9c8e7a45a1b21c25b9da1b0aa8 100644
--- a/cpu/native/rtc/posix-rtc.c
+++ b/cpu/native/rtc/posix-rtc.c
@@ -8,7 +8,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General Public
+ * This file is subject to the terms and conditions of the GNU Lesser General Public
  * License. See the file LICENSE in the top level directory for more details.
  *
  * @author  Ludwig Ortmann <ludwig.ortmann@fu-berlin.de>
diff --git a/cpu/native/startup.c b/cpu/native/startup.c
index d5f69c447ea53362bd808ce9b55fdf5e0d9c1d36..5f11ef70fa704231f9d058a0517340614c7519a9 100644
--- a/cpu/native/startup.c
+++ b/cpu/native/startup.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/cpu/native/syscalls.c b/cpu/native/syscalls.c
index 861fe2a1a441352e603adfa79d3e62f8e280d6af..a2124ad074339023b407e7a8e13f9b90c2c3216c 100644
--- a/cpu/native/syscalls.c
+++ b/cpu/native/syscalls.c
@@ -6,7 +6,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x/arch_cc1100.h b/drivers/cc110x/arch_cc1100.h
index 17559fa717219592e82c86b87a5b1c754e01b6a3..132a7a061d10239cc77179211b72313201d8d7dc 100644
--- a/drivers/cc110x/arch_cc1100.h
+++ b/drivers/cc110x/arch_cc1100.h
@@ -7,7 +7,7 @@
  *
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
 *******************************************************************************/
diff --git a/drivers/cc110x/cc1100-csmaca-mac.c b/drivers/cc110x/cc1100-csmaca-mac.c
index 2d2ff28c94766936e92a43a3cb82aa01b138ed1c..402831eeb69d4ad53531de1c2f91fd6e927aa786 100644
--- a/drivers/cc110x/cc1100-csmaca-mac.c
+++ b/drivers/cc110x/cc1100-csmaca-mac.c
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x/cc1100-csmaca-mac.h b/drivers/cc110x/cc1100-csmaca-mac.h
index 7fda9ee73f81f72df63369cc138aa03fa4a38933..278d7c0e33befa5d9944a236930ed198f87d40fe 100644
--- a/drivers/cc110x/cc1100-csmaca-mac.h
+++ b/drivers/cc110x/cc1100-csmaca-mac.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x/cc1100-defaultSettings.c b/drivers/cc110x/cc1100-defaultSettings.c
index eb5e9eb79de771cb88d855b8e9f6d12f41419691..8f68b5944630aef3e0c1660bf87fd84df63f479b 100644
--- a/drivers/cc110x/cc1100-defaultSettings.c
+++ b/drivers/cc110x/cc1100-defaultSettings.c
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  *  This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x/cc1100-defaultSettings.h b/drivers/cc110x/cc1100-defaultSettings.h
index d791302b06efa55b0c3850f2a9ddd81a74226cec..6b2a71ec9019df98b9fb6a06d01f3856b4dec516 100644
--- a/drivers/cc110x/cc1100-defaultSettings.h
+++ b/drivers/cc110x/cc1100-defaultSettings.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x/cc1100-interface.h b/drivers/cc110x/cc1100-interface.h
index 9d9108ea4b1dd4d2bd79e3bc8e81906b6814706c..305ece2327768170ab0fcd3391ed95020dc471d1 100644
--- a/drivers/cc110x/cc1100-interface.h
+++ b/drivers/cc110x/cc1100-interface.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x/cc1100-internal.h b/drivers/cc110x/cc1100-internal.h
index 8c1828150e52b53b5765ee8565a91f033561ea6c..cd51e283d5ba4e562ea66c7cb3611509af9ab268 100644
--- a/drivers/cc110x/cc1100-internal.h
+++ b/drivers/cc110x/cc1100-internal.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x/cc1100.c b/drivers/cc110x/cc1100.c
index 6fd400c065fff708a01c0793011a9c7abf7423d8..b3f396b0d33825aea4d74edd058517bd3faa3412 100644
--- a/drivers/cc110x/cc1100.c
+++ b/drivers/cc110x/cc1100.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2009-2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x/cc1100.h b/drivers/cc110x/cc1100.h
index 62d9662fdfa55ac88e3fa880a0caec2087631e4b..4fac1cbf00ab2db17c06ef780a980e4dd45511d3 100644
--- a/drivers/cc110x/cc1100.h
+++ b/drivers/cc110x/cc1100.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x/cc1100_phy.c b/drivers/cc110x/cc1100_phy.c
index a51858bef8390f0e76ac06eb8ce367089b4c3cd4..0b3dba8d60f11f7bf7f65826c3a7ce6d570ef0b9 100644
--- a/drivers/cc110x/cc1100_phy.c
+++ b/drivers/cc110x/cc1100_phy.c
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  *  This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x/cc1100_phy.h b/drivers/cc110x/cc1100_phy.h
index 3b9208896b94c1e5230f474c45de3228277a5c42..12eb147ab50e4bf1a597995199692ace731aca84 100644
--- a/drivers/cc110x/cc1100_phy.h
+++ b/drivers/cc110x/cc1100_phy.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x/cc1100_spi.c b/drivers/cc110x/cc1100_spi.c
index 953901a18dda088aab4c302df12ee2bcc28d6db5..8448e22acbcf6d4827e925e2749031fc479860c3 100644
--- a/drivers/cc110x/cc1100_spi.c
+++ b/drivers/cc110x/cc1100_spi.c
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  *  This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x/cc1100_spi.h b/drivers/cc110x/cc1100_spi.h
index 388574a146cc25218abde6d25ca5f19fd27ff707..cf39e016bc0b1285c319ba63098d6374d32f8721 100644
--- a/drivers/cc110x/cc1100_spi.h
+++ b/drivers/cc110x/cc1100_spi.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x_ng/cc110x-defaultSettings.c b/drivers/cc110x_ng/cc110x-defaultSettings.c
index 3b295cbb384ad26ecda0979f1a8237a2cce2c05a..3de2bf35b210c1c0ed7bc9e33ad2046a653bc685 100644
--- a/drivers/cc110x_ng/cc110x-defaultSettings.c
+++ b/drivers/cc110x_ng/cc110x-defaultSettings.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 INRIA 
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  */
diff --git a/drivers/cc110x_ng/cc110x-rx.c b/drivers/cc110x_ng/cc110x-rx.c
index 7e2d09c419e83e817bad5f8531b7e305ac2894a1..c9127571bda1f7c3dbfac996d498ce839f0ef59a 100644
--- a/drivers/cc110x_ng/cc110x-rx.c
+++ b/drivers/cc110x_ng/cc110x-rx.c
@@ -4,7 +4,7 @@
  * Copyright (C) 2009 Freie Universität Berlin
  * Copyright (C) 2013 INRIA 
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x_ng/cc110x-tx.c b/drivers/cc110x_ng/cc110x-tx.c
index 586654058c05b84dd0792e06a379f3f820f26849..a4ba933f994f4eb2498550f218f1cd2c293a9d6f 100644
--- a/drivers/cc110x_ng/cc110x-tx.c
+++ b/drivers/cc110x_ng/cc110x-tx.c
@@ -4,7 +4,7 @@
  * Copyright (C) 2009 Freie Universität Berlin
  * Copyright (C) 2013 INRIA 
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x_ng/cc110x.c b/drivers/cc110x_ng/cc110x.c
index 07feacee11dec68565f8695080e3246bc1ac843f..53f75b99d8feae9308b7ed12c6bbd35c79e43eb4 100644
--- a/drivers/cc110x_ng/cc110x.c
+++ b/drivers/cc110x_ng/cc110x.c
@@ -4,7 +4,7 @@
  * Copyright (C) 2013 Freie Universität Berlin
  * Copyright (C) 2013 INRIA 
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x_ng/include/cc110x-arch.h b/drivers/cc110x_ng/include/cc110x-arch.h
index 05700cbe4cd65554557670641413689878286337..78a22acad60a1428a696e0b8fc2b8edad0ae35d8 100644
--- a/drivers/cc110x_ng/include/cc110x-arch.h
+++ b/drivers/cc110x_ng/include/cc110x-arch.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x_ng/include/cc110x-config.h b/drivers/cc110x_ng/include/cc110x-config.h
index 9b959e81408e23ad0d24a30b921c66c35dc0ee9f..adad57b9b4ff893be46ef24301ab74eca4c1b319 100644
--- a/drivers/cc110x_ng/include/cc110x-config.h
+++ b/drivers/cc110x_ng/include/cc110x-config.h
@@ -4,7 +4,7 @@
  * Copyright (C) 2009 Freie Universität Berlin
  * Copyright (C) 2013 INRIA 
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x_ng/include/cc110x-defaultSettings.h b/drivers/cc110x_ng/include/cc110x-defaultSettings.h
index ff0d626c67f1c507a801366fc7e20e651523a3cd..80d021309695e9f673079a2cfb4781f6aefc714d 100644
--- a/drivers/cc110x_ng/include/cc110x-defaultSettings.h
+++ b/drivers/cc110x_ng/include/cc110x-defaultSettings.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x_ng/include/cc110x-internal.h b/drivers/cc110x_ng/include/cc110x-internal.h
index 392b30626d91465f5ad68807ca6e8c944864eca6..c4a579c8e5bed0059a412151b32cd5ccf894b950 100644
--- a/drivers/cc110x_ng/include/cc110x-internal.h
+++ b/drivers/cc110x_ng/include/cc110x-internal.h
@@ -4,7 +4,7 @@
  * Copyright (C) 2008 Freie Universität Berlin
  * Copyright (C) 2013 INRIA 
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x_ng/include/cc110x_ng.h b/drivers/cc110x_ng/include/cc110x_ng.h
index c3ca9074747366d5e72eea9052711d143ffc3c26..e49c91159095f47ef2c45b1fbe5768fb597b1df6 100644
--- a/drivers/cc110x_ng/include/cc110x_ng.h
+++ b/drivers/cc110x_ng/include/cc110x_ng.h
@@ -4,7 +4,7 @@
  * Copyright (C) 2009 Freie Universität Berlin
  * Copyright (C) 2013 INRIA 
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x_ng/include/cc110x_spi.h b/drivers/cc110x_ng/include/cc110x_spi.h
index 9be0e1f455b720791491b5c4f0e167577f3b0470..78bfa47a1ce710a21422c1d376587b05b03e192f 100644
--- a/drivers/cc110x_ng/include/cc110x_spi.h
+++ b/drivers/cc110x_ng/include/cc110x_spi.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc110x_ng/spi/cc110x_spi.c b/drivers/cc110x_ng/spi/cc110x_spi.c
index 449964182ceb5090defdfda0839e646fc34273df..2afb74c5043d0dc347db90b5dedc5df10e4e0aae 100644
--- a/drivers/cc110x_ng/spi/cc110x_spi.c
+++ b/drivers/cc110x_ng/spi/cc110x_spi.c
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/cc2420/include/cc2420_arch.h b/drivers/cc2420/include/cc2420_arch.h
index 5a4184acc7142850792627e2d89142d4113b115c..6cad7078771c9aa60aef0495192003927939e861 100644
--- a/drivers/cc2420/include/cc2420_arch.h
+++ b/drivers/cc2420/include/cc2420_arch.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/include/gpioint.h b/drivers/include/gpioint.h
index 47ef0cb11a9cfd2798f6645d4a4a9415e35ec86e..17aa629ecaee8975efe48c62b4ffc43568c4c2fb 100644
--- a/drivers/include/gpioint.h
+++ b/drivers/include/gpioint.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/include/ltc4150_arch.h b/drivers/include/ltc4150_arch.h
index 066fc326383052e14ab68c951568710469c57702..3aded5112926f4c591133c40e838931682d9e41b 100644
--- a/drivers/include/ltc4150_arch.h
+++ b/drivers/include/ltc4150_arch.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/include/rtc.h b/drivers/include/rtc.h
index 8197e1007d53fb8f3b83d90707f17e9261aadfa7..6b9f6a5302358fbf82ab0e12f0bbde69bdea619b 100644
--- a/drivers/include/rtc.h
+++ b/drivers/include/rtc.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/include/sht11.h b/drivers/include/sht11.h
index de6e8ea8cc7d67557679f0f42d3811455583c45c..9d05bc71bb7feed53e3123d6e1f78c71a78dbcc8 100644
--- a/drivers/include/sht11.h
+++ b/drivers/include/sht11.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/ltc4150/ltc4150.c b/drivers/ltc4150/ltc4150.c
index dc114cc666e908b39ff17b9f386c85d4e73febca..0698c681af938c0110ea2b39b0da19daa8825b22 100644
--- a/drivers/ltc4150/ltc4150.c
+++ b/drivers/ltc4150/ltc4150.c
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/drivers/sht11/sht11.c b/drivers/sht11/sht11.c
index ae98b65377ac5d5ba40b78594e3fa8761c3b9283..08e9f4032565c5e28e1cc45ce8eeadf510a97e99 100644
--- a/drivers/sht11/sht11.c
+++ b/drivers/sht11/sht11.c
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/auto_init/auto_init.c b/sys/auto_init/auto_init.c
index b58a0a7e378ad04ea68564bfc9bcddac21254f91..a1d865c7185a16e00401348345ee7fa6b55f0e67 100644
--- a/sys/auto_init/auto_init.c
+++ b/sys/auto_init/auto_init.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/bloom/bloom.c b/sys/bloom/bloom.c
index fea7cbda86abd212cfb580f2ab16c2b1e447423c..ccdffd1cf5e1cc1098969220ee028d9618b8afff 100644
--- a/sys/bloom/bloom.c
+++ b/sys/bloom/bloom.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/chardev_thread.c b/sys/chardev_thread.c
index e802b312a4d7c52fca81c2cb7bf83c388db2922c..54d1004f42acf2dd226d50273830055345937bac 100644
--- a/sys/chardev_thread.c
+++ b/sys/chardev_thread.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013, INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/config/config.c b/sys/config/config.c
index 67330b3928269d8c43c23cac95102a2ae38c47f7..674fa97d84999b2d677bb659e328fed9f34dd661 100644
--- a/sys/config/config.c
+++ b/sys/config/config.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/hashes/hashes.c b/sys/hashes/hashes.c
index 719c067213112b4f4b7c08948b61b77349055de6..a0e3566bb66536060f9ae5f7a6769fb7f9e9f3ee 100644
--- a/sys/hashes/hashes.c
+++ b/sys/hashes/hashes.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  */
diff --git a/sys/include/hashes.h b/sys/include/hashes.h
index 0d2e1b8de6824dfcc518341805fa05c9845291f8..881d1fbe94f528d9ebdfeeaba58bfde7420cfffa 100644
--- a/sys/include/hashes.h
+++ b/sys/include/hashes.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Freie Universität Berlin
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  */
diff --git a/sys/include/posix_io.h b/sys/include/posix_io.h
index b4fe27378eb03b0ca193cc24047c042309a7cbbb..9f880b82da4db4c74878e9a8d31d9e337b444664 100644
--- a/sys/include/posix_io.h
+++ b/sys/include/posix_io.h
@@ -1,7 +1,7 @@
 /**
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  */
diff --git a/sys/include/radio/radio.h b/sys/include/radio/radio.h
index 7894fca014bc34016c39db414be6d3fe3c014147..66ed4d9ab73554db5d5703e4138ecc41f7451fc8 100644
--- a/sys/include/radio/radio.h
+++ b/sys/include/radio/radio.h
@@ -4,7 +4,7 @@
  * Copyright (C) 2008-2009  Freie Universitaet Berlin (FUB).
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/include/radio/types.h b/sys/include/radio/types.h
index 761023189209514110b5a082aacf83b30552734e..f40f142577ad761cd7b96163ad8452aaf34ffd88 100644
--- a/sys/include/radio/types.h
+++ b/sys/include/radio/types.h
@@ -4,7 +4,7 @@
  * Copyright (C) 2009  Freie Universitaet Berlin (FUB).
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/include/shell.h b/sys/include/shell.h
index 29e46c70961da8f155500a24d25a9ba09034349b..64a9b45751aaf29f8422fc97c4a56fd20ac8c9eb 100644
--- a/sys/include/shell.h
+++ b/sys/include/shell.h
@@ -6,7 +6,7 @@
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/lib/ringbuffer.c b/sys/lib/ringbuffer.c
index d2bdf5025efe9386d0f06829db7d9d7be6a96968..b67f528214fa8e7ea30cb909ae0e3a36ae654c61 100644
--- a/sys/lib/ringbuffer.c
+++ b/sys/lib/ringbuffer.c
@@ -4,7 +4,7 @@
  * Copyright (C) 2013 Freie Universität Berlin
  * Copyright (C) 2013 INRIA
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/lib/ringbuffer.h b/sys/lib/ringbuffer.h
index 0528b31bcedfedb52050f447d77aec7c076e1ca4..a953bbc87fd8a6e3afb05d2d07baf5444adad267 100644
--- a/sys/lib/ringbuffer.h
+++ b/sys/lib/ringbuffer.h
@@ -4,7 +4,7 @@
  * Copyright (C) 2013 Freie Universität Berlin
  * Copyright (C) 2013 INRIA
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/destiny/destiny.c b/sys/net/destiny/destiny.c
index 976a87ac73cfdeffef20c9b3abbed6222c37dda0..f3733a406a1bdc64d6eb6ff7f12e2ffaaec6d435 100644
--- a/sys/net/destiny/destiny.c
+++ b/sys/net/destiny/destiny.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/destiny/socket.c b/sys/net/destiny/socket.c
index b22d88102e64ea1508584745a8e0c1670e242cf7..279a3b9605aebb4293c019479b908c59e7555f72 100644
--- a/sys/net/destiny/socket.c
+++ b/sys/net/destiny/socket.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/destiny/tcp.c b/sys/net/destiny/tcp.c
index 018069fd9e8482ec97d75d635704067fbc4eb2ab..be705327fb433c6ae9985f5aa2d2b2c7f015f5f4 100644
--- a/sys/net/destiny/tcp.c
+++ b/sys/net/destiny/tcp.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/destiny/tcp.h b/sys/net/destiny/tcp.h
index 5803d9b323f3412ff3a68d00ce3d3ca38d0d794a..9abd0d0215942e1e3980f1f782e2a2f0e51b5e94 100644
--- a/sys/net/destiny/tcp.h
+++ b/sys/net/destiny/tcp.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/destiny/tcp_hc.c b/sys/net/destiny/tcp_hc.c
index 3517e3a39d4fb2a2297dbea4b1b97be5a8137492..77343191ac158b8363364172c81818d513dbbfc4 100644
--- a/sys/net/destiny/tcp_hc.c
+++ b/sys/net/destiny/tcp_hc.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/destiny/tcp_timer.c b/sys/net/destiny/tcp_timer.c
index 6be9f2b0f5ccff1be3f617b19251f1be3fbf79ba..de47653767caa32ac3a0763448e221d538cfb3cc 100644
--- a/sys/net/destiny/tcp_timer.c
+++ b/sys/net/destiny/tcp_timer.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/destiny/udp.c b/sys/net/destiny/udp.c
index 4cf6c31a61a43ddbbc1f23373df8d31e62400b5e..de0f4892f0f2c193e2afba729f5905df809098af 100644
--- a/sys/net/destiny/udp.c
+++ b/sys/net/destiny/udp.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/destiny/udp.h b/sys/net/destiny/udp.h
index 5eab7c460ea1577abdda71af88bcaa7f50cd2210..dfee1fad9ecd90eda6004449c73a8a695c682b0c 100644
--- a/sys/net/destiny/udp.h
+++ b/sys/net/destiny/udp.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/ieee802154/ieee802154_frame.c b/sys/net/ieee802154/ieee802154_frame.c
index 125fedaac3322674659b2314cb9ba832067371d9..031ef66cfa4db9f84e7f9158b13a3da6314ac063 100644
--- a/sys/net/ieee802154/ieee802154_frame.c
+++ b/sys/net/ieee802154/ieee802154_frame.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/include/destiny.h b/sys/net/include/destiny.h
index e97624070765e89cea42ef2a8f098e1afa8fa21c..c468d0d0082221e2e8ad86df13eedd02487ce57d 100644
--- a/sys/net/include/destiny.h
+++ b/sys/net/include/destiny.h
@@ -4,7 +4,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  */
diff --git a/sys/net/include/destiny/socket.h b/sys/net/include/destiny/socket.h
index b0009dd7b0b142f8caf1b331f60d220b1e0ad1ab..b0332b3e46781c5e7e475cf7288d19eecf209044 100644
--- a/sys/net/include/destiny/socket.h
+++ b/sys/net/include/destiny/socket.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/include/destiny/types.h b/sys/net/include/destiny/types.h
index ba2227bb24b06341da6ed4045c31c1875b065d38..01b4f9d59c7849cc085d803ac960f25399ff545d 100644
--- a/sys/net/include/destiny/types.h
+++ b/sys/net/include/destiny/types.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/include/ieee802154_frame.h b/sys/net/include/ieee802154_frame.h
index 36231edfe33b0abb5999d22897bc6799a1c0f023..224684a5b1f4bd6b527ab5ebfb4f3985ea791ebe 100644
--- a/sys/net/include/ieee802154_frame.h
+++ b/sys/net/include/ieee802154_frame.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/include/ipv6.h b/sys/net/include/ipv6.h
index 97fc4ccedacbe64deaac9103e01f58cc7439bc1c..e17fc2d8f21266dd48296e87bf200088d34d2275 100644
--- a/sys/net/include/ipv6.h
+++ b/sys/net/include/ipv6.h
@@ -4,7 +4,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/include/protocol-multiplex.h b/sys/net/include/protocol-multiplex.h
index 441deeba01c1b59de4bd456bdce50568f20c6038..f9929916db7b54da9d55b4ebbbbb53376f3cf5df 100644
--- a/sys/net/include/protocol-multiplex.h
+++ b/sys/net/include/protocol-multiplex.h
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/include/sixlowpan.h b/sys/net/include/sixlowpan.h
index f7a5e6df8b85c803d4d3ee8470b706cbca1e38c2..8c9dd92e724ec525e7389de0717cc13514ed8331 100644
--- a/sys/net/include/sixlowpan.h
+++ b/sys/net/include/sixlowpan.h
@@ -4,7 +4,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  */
diff --git a/sys/net/include/sixlowpan/error.h b/sys/net/include/sixlowpan/error.h
index ca6c2b69da34f05e6073e16684560f93edf606e7..e6dc9ecbe90fa9fa7271ddbbd4f55ed04f1c6c80 100644
--- a/sys/net/include/sixlowpan/error.h
+++ b/sys/net/include/sixlowpan/error.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/include/sixlowpan/icmp.h b/sys/net/include/sixlowpan/icmp.h
index 5d657996f141da465a50820c490bb79b65f52231..391f314268b2027db5ff6c68ffe10a42b69054fe 100644
--- a/sys/net/include/sixlowpan/icmp.h
+++ b/sys/net/include/sixlowpan/icmp.h
@@ -4,7 +4,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/include/sixlowpan/ip.h b/sys/net/include/sixlowpan/ip.h
index 5799ee627af671f1ab9c15036adfff9012450c50..e81cff9690c42baddf61a81467cf4ca36a32a784 100644
--- a/sys/net/include/sixlowpan/ip.h
+++ b/sys/net/include/sixlowpan/ip.h
@@ -4,7 +4,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/include/sixlowpan/lowpan.h b/sys/net/include/sixlowpan/lowpan.h
index 2edf02174faab94a433a0357f0f09159c81eea9e..90d1dfe9ff65e70a6b59366f95e71ef7de145880 100644
--- a/sys/net/include/sixlowpan/lowpan.h
+++ b/sys/net/include/sixlowpan/lowpan.h
@@ -4,7 +4,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/include/sixlowpan/mac.h b/sys/net/include/sixlowpan/mac.h
index ee80476c6eaf9be484650175e15284cb29e10718..690bd5999f2b41090a72eba5c4d01a2cf4cd3eb8 100644
--- a/sys/net/include/sixlowpan/mac.h
+++ b/sys/net/include/sixlowpan/mac.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/include/sixlowpan/ndp.h b/sys/net/include/sixlowpan/ndp.h
index 5789f7624a77ac19ca4c31d5eaba77229ae76b7b..5cb7aca2fc1e75c6217e8486c2ad173ae1c6d380 100644
--- a/sys/net/include/sixlowpan/ndp.h
+++ b/sys/net/include/sixlowpan/ndp.h
@@ -4,7 +4,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/include/sixlowpan/types.h b/sys/net/include/sixlowpan/types.h
index 596051a2434fea34133d15811e447de5e7b1032b..8d9cd9724dde0f01ea8786a63ad2d2ac76c2e207 100644
--- a/sys/net/include/sixlowpan/types.h
+++ b/sys/net/include/sixlowpan/types.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/protocol-multiplex/protocol-multiplex.c b/sys/net/protocol-multiplex/protocol-multiplex.c
index 1cebb2ba4893902235db084988047ed9f813d65f..83bd20c22fa734cb76483d725c9ab539c89cdc21 100644
--- a/sys/net/protocol-multiplex/protocol-multiplex.c
+++ b/sys/net/protocol-multiplex/protocol-multiplex.c
@@ -6,7 +6,7 @@ and Telematics group (http://cst.mi.fu-berlin.de).
  * ----------------------------------------------------------------------------
  * This file is part of RIOT.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/rpl/of0.c b/sys/net/rpl/of0.c
index 3cca85e196f291669d3f07d48c0cee5945b22811..b8d5d0eb46e4ad71a4e74349eca8f943db23747f 100644
--- a/sys/net/rpl/of0.c
+++ b/sys/net/rpl/of0.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/rpl/rpl.c b/sys/net/rpl/rpl.c
index 1d5b5f4447b214e810917d195710739749532d74..58e8612f13db9289405b79efaa66aa1e0546187a 100644
--- a/sys/net/rpl/rpl.c
+++ b/sys/net/rpl/rpl.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/rpl/rpl.h b/sys/net/rpl/rpl.h
index 6055f496c5976076ddaacac878ec8d9a0fdd74ef..bda4e7870b56a947b4dd771778e2421f929fa0d7 100644
--- a/sys/net/rpl/rpl.h
+++ b/sys/net/rpl/rpl.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/rpl/rpl_dodag.c b/sys/net/rpl/rpl_dodag.c
index 0ea3086658eefa872b84c3a5731857b2f58ce33b..77aefe76f40954d4845021caea2f43a772942a45 100644
--- a/sys/net/rpl/rpl_dodag.c
+++ b/sys/net/rpl/rpl_dodag.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/rpl/rpl_dodag.h b/sys/net/rpl/rpl_dodag.h
index 014a0b51a26bce9f2c2fa7e862cb35f45a88cbf0..e2a96ad64496f5f5d7f904f99e30b604b5d6198c 100644
--- a/sys/net/rpl/rpl_dodag.h
+++ b/sys/net/rpl/rpl_dodag.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/rpl/rpl_structs.h b/sys/net/rpl/rpl_structs.h
index 3a9d121d372c0fc8aff1345cf007c83a53878d61..6da269fb4fa277fc4d9cfa9437cf09667e27568e 100644
--- a/sys/net/rpl/rpl_structs.h
+++ b/sys/net/rpl/rpl_structs.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/rpl/trickle.c b/sys/net/rpl/trickle.c
index f0d55862bbde99e11886b53124ab2b2ab9b9de64..ff08ac8f643472fa2bf0ecd1bebc5e1c74c1a5e3 100644
--- a/sys/net/rpl/trickle.c
+++ b/sys/net/rpl/trickle.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/rpl/trickle.h b/sys/net/rpl/trickle.h
index d3079d19728956a37f159f8f4eaa3de5b6aa50d0..5d8726253f7ac2cd066a106a192e91fef371fc79 100644
--- a/sys/net/rpl/trickle.h
+++ b/sys/net/rpl/trickle.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/sixlowpan/border.c b/sys/net/sixlowpan/border.c
index bb850bd131bc7fba7db54e0519bd2f10969c3157..fd84d585b572b51b5a3aaff3d0b7c2f1e6dd16a7 100644
--- a/sys/net/sixlowpan/border.c
+++ b/sys/net/sixlowpan/border.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/sixlowpan/border.h b/sys/net/sixlowpan/border.h
index 6ee70b8dc487500cbb5d38b57d4905dd27bb3dc1..f9a7d0c9a5f769fa593e96f49632ec2417697567 100644
--- a/sys/net/sixlowpan/border.h
+++ b/sys/net/sixlowpan/border.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/sixlowpan/bordermultiplex.c b/sys/net/sixlowpan/bordermultiplex.c
index b2aefc6133ad2b44a8eb65cd4bdeafb3260ca39a..e04ccdc8c02072b3f6f3cceaebabca210615a0e7 100644
--- a/sys/net/sixlowpan/bordermultiplex.c
+++ b/sys/net/sixlowpan/bordermultiplex.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/sixlowpan/bordermultiplex.h b/sys/net/sixlowpan/bordermultiplex.h
index ff67d9980b450a81c83c24b3c5f786deb02ff57f..5dcd3285cfbc45995862387a03f62a60efc477c8 100644
--- a/sys/net/sixlowpan/bordermultiplex.h
+++ b/sys/net/sixlowpan/bordermultiplex.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/sixlowpan/flowcontrol.c b/sys/net/sixlowpan/flowcontrol.c
index 15f7cf74ae2a73b727f3f0ca4a07eca73c98594e..4fd7affd875294679b82d072f92e93deed712279 100644
--- a/sys/net/sixlowpan/flowcontrol.c
+++ b/sys/net/sixlowpan/flowcontrol.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/sixlowpan/flowcontrol.h b/sys/net/sixlowpan/flowcontrol.h
index b14b7387bfe4dd5ec8f6b3785fd41aa96a6d25ae..ea736105c5d82491ae8b7d37a1b10ad558e0273e 100644
--- a/sys/net/sixlowpan/flowcontrol.h
+++ b/sys/net/sixlowpan/flowcontrol.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/sixlowpan/icmp.c b/sys/net/sixlowpan/icmp.c
index bf502458ee2a42a671204ca4d054c351d1c6e14b..4062de871997550e9c5cac5d5f3a391fc8703948 100644
--- a/sys/net/sixlowpan/icmp.c
+++ b/sys/net/sixlowpan/icmp.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/sixlowpan/icmp.h b/sys/net/sixlowpan/icmp.h
index 37babfe86b8333e885fa09ec929bc33736348980..7840704cc06c70dd0b0e69983c48863aa7e06646 100644
--- a/sys/net/sixlowpan/icmp.h
+++ b/sys/net/sixlowpan/icmp.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/sixlowpan/ip.c b/sys/net/sixlowpan/ip.c
index 7203e79e2294a50627ae2166bb150a426d9855ea..05516f503fec6806079583d7858f7000673be79c 100644
--- a/sys/net/sixlowpan/ip.c
+++ b/sys/net/sixlowpan/ip.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/sixlowpan/ip.h b/sys/net/sixlowpan/ip.h
index 9258005e7b9f08833570774bc33ba6e850bb6019..ec5ecf8291409658befe9fa8e0fa3a5ddacf00ef 100644
--- a/sys/net/sixlowpan/ip.h
+++ b/sys/net/sixlowpan/ip.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/sixlowpan/lowpan.c b/sys/net/sixlowpan/lowpan.c
index c5f536d6b187201608ac15248bd338cb6e43b631..1db72ee5b8cc22e9dd7662bb6ea14bcc8d47ce1d 100644
--- a/sys/net/sixlowpan/lowpan.c
+++ b/sys/net/sixlowpan/lowpan.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/sixlowpan/lowpan.h b/sys/net/sixlowpan/lowpan.h
index 770913875ab5bc51ae20205df61e45002daca7c6..ebf4ea44cc10c0b7f65958451de89b316c69e95b 100644
--- a/sys/net/sixlowpan/lowpan.h
+++ b/sys/net/sixlowpan/lowpan.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/sixlowpan/mac.c b/sys/net/sixlowpan/mac.c
index 92b0e24c53a3c78969a54be652ce947544b607db..111559574b660524aead1eab0e009e691a88bfad 100644
--- a/sys/net/sixlowpan/mac.c
+++ b/sys/net/sixlowpan/mac.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/net/sixlowpan/serialnumber.c b/sys/net/sixlowpan/serialnumber.c
index f774b76627d4612017d5995af9468f43af29539d..4195a496f9f8fd04adce44fc3314076d1a2c03d1 100644
--- a/sys/net/sixlowpan/serialnumber.c
+++ b/sys/net/sixlowpan/serialnumber.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/posix/doc.txt b/sys/posix/doc.txt
index 95aef02e23c4627280f2dee07e324970925ee7f1..60e41b850de3f9a6cbafecb79cc0d301f734ad08 100644
--- a/sys/posix/doc.txt
+++ b/sys/posix/doc.txt
@@ -1,7 +1,7 @@
 /*
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  */
diff --git a/sys/posix/include/strings.h b/sys/posix/include/strings.h
index 508f32aa0217c7055c4d46bec045d665438d05a1..7f08ea30a00622e52b98c1616dc478349669d782 100644
--- a/sys/posix/include/strings.h
+++ b/sys/posix/include/strings.h
@@ -1,7 +1,7 @@
 /**
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  */
diff --git a/sys/posix/posix_io.c b/sys/posix/posix_io.c
index d10ef6a82140e0e5f0a5efcfd4d0bf057c73f1c1..efc731c9f091cbcb1a822fc74a57f5ff38bc889f 100644
--- a/sys/posix/posix_io.c
+++ b/sys/posix/posix_io.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013, INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/ps/ps.c b/sys/ps/ps.c
index 07e7d91cc7a050ee5f1393dfbb7e474d458d60f0..a0f9dc30ca585af999c126414b48649cdbd7e2b2 100644
--- a/sys/ps/ps.c
+++ b/sys/ps/ps.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013, INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/semaphore/semaphore.c b/sys/semaphore/semaphore.c
index af9e7bacc9e61d9742a2846f450c9dd9128af453..9cafb2fbeb7f373cd6da7c52cbede8fb35170642 100644
--- a/sys/semaphore/semaphore.c
+++ b/sys/semaphore/semaphore.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/shell/commands/sc_cc1100.c b/sys/shell/commands/sc_cc1100.c
index 6371aedfe0602bfdea09b7cc5e21558560325532..b1a6a47425a2d40e68e3249f635016cc71a19403 100644
--- a/sys/shell/commands/sc_cc1100.c
+++ b/sys/shell/commands/sc_cc1100.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/shell/commands/sc_cc110x_ng.c b/sys/shell/commands/sc_cc110x_ng.c
index 83850c90a731220b5260c163b98dba6cd22d85e4..6435f454fb4c958993fd3c61be593842e5793eec 100644
--- a/sys/shell/commands/sc_cc110x_ng.c
+++ b/sys/shell/commands/sc_cc110x_ng.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/shell/commands/sc_disk.c b/sys/shell/commands/sc_disk.c
index 06ae7d74720c2773af1260b300e8a8257fdea32e..69d2a8b5daf81135e357a96ae07a4708c58cd810 100644
--- a/sys/shell/commands/sc_disk.c
+++ b/sys/shell/commands/sc_disk.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/shell/commands/sc_id.c b/sys/shell/commands/sc_id.c
index eb40f07906d383dd3da0a3ece7fb91f7d4df97d7..b5f0eabe61739ea95cf05511ee3fc6da0cdca02d 100644
--- a/sys/shell/commands/sc_id.c
+++ b/sys/shell/commands/sc_id.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/shell/commands/sc_ltc4150.c b/sys/shell/commands/sc_ltc4150.c
index 85bd52ecc411e7e7cc49011fb5bcfbd18101d14b..9a0587b13259e5cd08a8cc70e308a5e194cbcd5c 100644
--- a/sys/shell/commands/sc_ltc4150.c
+++ b/sys/shell/commands/sc_ltc4150.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/shell/commands/sc_nativenet.c b/sys/shell/commands/sc_nativenet.c
index bf649d4c653b8b32fe2596f04edf97b2e2c52d92..e3cd4856e8cbc0ba180eaacce10be9f6ea181531 100644
--- a/sys/shell/commands/sc_nativenet.c
+++ b/sys/shell/commands/sc_nativenet.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013 Ludwig Ortmann.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/shell/commands/sc_ps.c b/sys/shell/commands/sc_ps.c
index e45b8fd349faa92e12b5be9ddeb816bf0d7ea090..c6afeabac5a387f8f77ac75ab0f14ad499f42445 100644
--- a/sys/shell/commands/sc_ps.c
+++ b/sys/shell/commands/sc_ps.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/shell/commands/sc_rtc.c b/sys/shell/commands/sc_rtc.c
index e12f503fb4d03c377f131253bd9b46928b7da571..be8b530d6b50c5e730268b8ca6bef80f98323c34 100644
--- a/sys/shell/commands/sc_rtc.c
+++ b/sys/shell/commands/sc_rtc.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/shell/commands/sc_sht11.c b/sys/shell/commands/sc_sht11.c
index fddf1567dee8354f434c126b61000f43ead8ee19..2fd687785c7bf6cee543f42b81cbba328d73d527 100644
--- a/sys/shell/commands/sc_sht11.c
+++ b/sys/shell/commands/sc_sht11.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *
diff --git a/sys/shell/shell.c b/sys/shell/shell.c
index 63ae38ec22828e15a6e5254b30b3662be4f3fd1e..3a5c955ee5a9548aa889340c3932e47304cb190f 100644
--- a/sys/shell/shell.c
+++ b/sys/shell/shell.c
@@ -4,7 +4,7 @@
  * Copyright (C) 2009, Freie Universitaet Berlin (FUB).
  * Copyright (C) 2013, INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  */
diff --git a/sys/transceiver/transceiver.c b/sys/transceiver/transceiver.c
index 4374d67d57a5c2bb6079dfd46b8724b1f692d436..5a491824a7fdb2c5640d907b083c44d801d70390 100644
--- a/sys/transceiver/transceiver.c
+++ b/sys/transceiver/transceiver.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2013  INRIA.
  *
- * This file subject to the terms and conditions of the GNU Lesser General
+ * This file is subject to the terms and conditions of the GNU Lesser General
  * Public License. See the file LICENSE in the top level directory for more
  * details.
  *