diff --git a/boards/calliope-mini/include/board.h b/boards/calliope-mini/include/board.h
index e8cc2e3f485a5eb1960cad01387cf489e02233a1..e423adac79ba7a94da87911dd97daf8353bb1421 100644
--- a/boards/calliope-mini/include/board.h
+++ b/boards/calliope-mini/include/board.h
@@ -10,6 +10,8 @@
  * @defgroup    boards_calliope-mini Calliope mini
  * @ingroup     boards
  * @brief       Board specific files for the Calliope mini
+ *
+ * This board is for calliope-mini revision 1.0.
  * @{
  *
  * @file
@@ -61,7 +63,7 @@ extern "C" {
  */
 #define BTN0_PIN                    GPIO_PIN(0, 17)
 #define BTN0_MODE                   GPIO_IN
-#define BTN1_PIN                    GPIO_PIN(0, 26)
+#define BTN1_PIN                    GPIO_PIN(0, 16)
 #define BTN1_MODE                   GPIO_IN
 /** @} */
 
diff --git a/boards/calliope-mini/include/periph_conf.h b/boards/calliope-mini/include/periph_conf.h
index 9578073058f23b7904026b4b033e87cdcdd3ba76..2d7e5458da85f26034a03c9c70f6957cae9cdcf4 100644
--- a/boards/calliope-mini/include/periph_conf.h
+++ b/boards/calliope-mini/include/periph_conf.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 Freie Universität Berlin
+ * Copyright (C) 2016-2017 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
@@ -14,6 +14,7 @@
  * @brief       Peripheral configuration for the Calliope mini
  *
  * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
+ * @author      Semjon Kerner <semjon.kerner@fu-berlin.de>
  */
 
 #ifndef PERIPH_CONF_H
@@ -100,8 +101,8 @@ static const timer_conf_t timer_config[] = {
 static const i2c_conf_t i2c_config[] = {
     {
         .dev     = NRF_TWI0,
-        .pin_scl = 0,
-        .pin_sda = 30,
+        .pin_scl = 19,
+        .pin_sda = 20,
         .ppi     = 0
     }
 };