diff --git a/Makefile b/Makefile
index ddcc508..6dbaf98 100644
--- a/Makefile
+++ b/Makefile
@@ -251,6 +251,8 @@ CFLAGS += -ffunction-sections -fdata-sections -fno-strict-aliasing
 CFLAGS += -fno-builtin --short-enums -fstack-usage
 
 # Defined Symbol (MACROS)
+
+# TODO use GIT_VERSION (numberic format)
 CFLAGS += -DMK_BOOTLOADER_VERSION=0x0$(SD_VER1)0$(SD_VER2)0$(SD_VER3)UL
 
 CFLAGS += -D__HEAP_SIZE=0
diff --git a/src/boards/feather_nrf52840_express.h b/src/boards/feather_nrf52840_express.h
index 3206046..4d6c998 100644
--- a/src/boards/feather_nrf52840_express.h
+++ b/src/boards/feather_nrf52840_express.h
@@ -53,8 +53,8 @@
 /* BUTTON
  *------------------------------------------------------------------*/
 #define BUTTONS_NUMBER        2
-#define BUTTON_1              _PINNUM(0, 15)
-#define BUTTON_2              _PINNUM(0, 19)
+#define BUTTON_1              _PINNUM(1, 02)
+#define BUTTON_2              _PINNUM(0, 10)
 #define BUTTON_PULL           NRF_GPIO_PIN_PULLUP
 
 /*------------------------------------------------------------------*/