diff --git a/boards/ST_STM32F401_DISCOVERY/board.mk b/boards/ST_STM32F401_DISCOVERY/board.mk
index e0c321740..216e6d9f8 100644
--- a/boards/ST_STM32F401_DISCOVERY/board.mk
+++ b/boards/ST_STM32F401_DISCOVERY/board.mk
@@ -1,5 +1,5 @@
 # List of all the board related files.
-BOARDSRC = boards/ST_STM32F401_DISCOVERY/board.c
+BOARDSRC = ${CHIBIOS}/boards/ST_STM32F401_DISCOVERY/board.c
 
 # Required include directories
-BOARDINC = boards/ST_STM32F401_DISCOVERY
+BOARDINC = ${CHIBIOS}/boards/ST_STM32F401_DISCOVERY