diff --git a/src/drivers/boards/px4cannode-v1/px4cannode_buttons.c b/src/drivers/boards/px4cannode-v1/px4cannode_buttons.c
index 7067857de7..0d57465e7b 100644
--- a/src/drivers/boards/px4cannode-v1/px4cannode_buttons.c
+++ b/src/drivers/boards/px4cannode-v1/px4cannode_buttons.c
@@ -117,7 +117,7 @@ void board_button_initialize(void)
  *
  ****************************************************************************/
 
-uint8_t board_buttons(void)
+uint32_t board_buttons(void)
 {
 	return stm32_gpioread(BUTTON_BOOT0n) ? 0 : BUTTON_BOOT0_MASK;
 }