diff --git a/boards/OLIMEX_SAM7_EX256/board.c b/boards/OLIMEX_SAM7_EX256/board.c
index d1439d7f3..c8c9e11c7 100644
--- a/boards/OLIMEX_SAM7_EX256/board.c
+++ b/boards/OLIMEX_SAM7_EX256/board.c
@@ -94,7 +94,7 @@ void boardInit(void) {
   palSetGroupMode(IOPORT1,
                   PIOA_B1_MASK | PIOA_B2_MASK | PIOA_B3_MASK |
                   PIOA_B4_MASK | PIOA_B5_MASK,
-                  0
+                  0,
                   PAL_MODE_INPUT);
   palSetGroupMode(IOPORT2, PIOB_SW1_MASK | PIOB_SW2_MASK, 0, PAL_MODE_INPUT);