diff --git a/boards/native/include/board_internal.h b/boards/native/include/board_internal.h
index a364ed24cc34806d34b3617ff8934e3a4202b4c1..aa4ac54ead7b8b249bebe05616791fc9d0389952 100644
--- a/boards/native/include/board_internal.h
+++ b/boards/native/include/board_internal.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2013, 2014 Ludwig Ortmann
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
 #ifdef MODULE_UART0
 #include <sys/select.h>
 void _native_handle_uart0_input(void);
diff --git a/core/include/kernel_types.h b/core/include/kernel_types.h
index 955df27ba95a69ca4466bb2ec6fc5342b6f383ef..b0fafc9b8818ae6cdedb30e3fbc52a7bda13b547 100644
--- a/core/include/kernel_types.h
+++ b/core/include/kernel_types.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2014 Oliver Hahm
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
 #ifndef KERNEL_TYPES_H
 #define KERNEL_TYPES_H
 
diff --git a/cpu/native/include/native_internal.h b/cpu/native/include/native_internal.h
index f9fafa3aaff752266e88fba30cd0fcf0277f1747..74c1a113ac69e780dba709cb60aea60e96c7cf2e 100644
--- a/cpu/native/include/native_internal.h
+++ b/cpu/native/include/native_internal.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2013, 2014 Ludwig Ortmann
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
 /**
  * Native CPU internal declarations
  */
diff --git a/sys/include/auto_init.h b/sys/include/auto_init.h
index 95b8c4bc8148c59144bf816140383e9e006759ff..48868200fce7ebdcb4e87dedd87f7f8e7500330f 100644
--- a/sys/include/auto_init.h
+++ b/sys/include/auto_init.h
@@ -1,3 +1,13 @@
+/*
+ * Copyright (C) 2010 Freie Universität Berlin
+ * Copyright (C) 2010 Kaspar Schleiser
+ * Copyright (C) 2013 INRIA
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
 
 /**
  * @defgroup    sys_autoinit Auto-init
diff --git a/sys/include/bloom.h b/sys/include/bloom.h
index 2df6d457fa90d0e5b06a23e2a7037e0cad0cbb7c..fad8d645a42806f253f6bb3c759aff89ed133bf9 100644
--- a/sys/include/bloom.h
+++ b/sys/include/bloom.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2014 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
 /*
  * bloom.c
  *
diff --git a/sys/include/board_uart0.h b/sys/include/board_uart0.h
index 80355906ce2172732485a7ca7abb9f1f36a350e2..9debe572ef6738989c393eb1de45bbb98da60a7b 100644
--- a/sys/include/board_uart0.h
+++ b/sys/include/board_uart0.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2010 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
 
 /**
  * @defgroup    sys_uart0 UART0
diff --git a/sys/include/chardev_thread.h b/sys/include/chardev_thread.h
index 8112bf5772deae91b3962574501826bba45acc62..e74ed038bd5a296aa665f93a993d60232b3eb078 100644
--- a/sys/include/chardev_thread.h
+++ b/sys/include/chardev_thread.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2010 Kaspar Schleiser
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
 
 /**
  * @defgroup    sys_chardevthread Chardev Thread
diff --git a/sys/include/hash_string.h b/sys/include/hash_string.h
index e927cf15dd4d96ab5a136a89966b9dd5a55199c8..f3494fd9a919d39827ff94ad075f47ad76d353bd 100644
--- a/sys/include/hash_string.h
+++ b/sys/include/hash_string.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2010 Kaspar Schleiser
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
 #ifndef __HASH_STRING_H
 #define __HASH_STRING_H
 
diff --git a/sys/include/ping.h b/sys/include/ping.h
index 6e9d392227c6f326594115db45df6cb3b674c6b7..65e4e13c9fcb7a964e40e410d48bea61cd12177f 100644
--- a/sys/include/ping.h
+++ b/sys/include/ping.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2010 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
 
 /**
  * @defgroup    sys_ping Ping
diff --git a/sys/include/ps.h b/sys/include/ps.h
index cc63a3d0156296f694ed2a550b8d65ad496f10a8..312cea805ff9b9e26bf43dacb76537cd989facc6 100644
--- a/sys/include/ps.h
+++ b/sys/include/ps.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2010 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
 
 /**
  * @defgroup    sys_ps PS
diff --git a/sys/include/random.h b/sys/include/random.h
index 53199d4b2097817012e39e812251d37144996be5..d8abcec494f170641b36bcd0308c0fd8b92ed93d 100644
--- a/sys/include/random.h
+++ b/sys/include/random.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2013 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
 
 /**
  * @defgroup    sys_random Random
diff --git a/sys/include/shell_commands.h b/sys/include/shell_commands.h
index 7e11ffce11a6f0b481cbf1fc24ecf6ed997cc7ad..8eb68dd7e8326d2380c52752e332c7e33c3f0d62 100644
--- a/sys/include/shell_commands.h
+++ b/sys/include/shell_commands.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2010 Kaspar Schleiser
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
 #ifndef __SHELL_COMMANDS_H
 #define __SHELL_COMMANDS_H
 
diff --git a/sys/include/timex.h b/sys/include/timex.h
index fdfe37c794407f1cbed9baa68c48729fd27be185..96674172df978c0a0067cec3520ea11da9ce0926 100644
--- a/sys/include/timex.h
+++ b/sys/include/timex.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2010 Kaspar Schleiser
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
 
 /**
  * @defgroup    sys_timex Timex
diff --git a/sys/include/tm.h b/sys/include/tm.h
index e2c41ebe19da276bf6acdb5c498fb695f9488f25..abdb0c45e23a973972811d3ad143dd149c22de59 100644
--- a/sys/include/tm.h
+++ b/sys/include/tm.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2014 René Kijewski
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
 /**
  * @addtogroup  sys_timex
  * @{
diff --git a/sys/include/transceiver.h b/sys/include/transceiver.h
index d75d7ee104b2632b7e7cd789d1fc15cbca1c2d35..fd076d901abeacafe4cd454e97ce675235207563 100644
--- a/sys/include/transceiver.h
+++ b/sys/include/transceiver.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2010 - 2014 Oliver Hahm
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
 /**
  * @defgroup    sys_transceiver Transceiver
  * @ingroup     sys