diff --git a/platforms/stm32f405/src/can.c b/platforms/stm32f405/src/can.c
index 49588a4..41c4abb 100644
--- a/platforms/stm32f405/src/can.c
+++ b/platforms/stm32f405/src/can.c
@@ -22,7 +22,7 @@ HAL_StatusTypeDef can_init(can_t *can) {
 	return err;
 }
 
-HAL_StatusTypeDef can_add_filter(can_t *can, uint32_t *id_list) {
+HAL_StatusTypeDef can_add_filter(can_t *can, uint32_t id_list[4]) {
 	static int filterBank = 0;
 
 	if (filterBank > 7)