diff --git a/boards/mcb2388/include/board.h b/boards/mcb2388/include/board.h
index bc606d8378..6bc6f64e96 100644
--- a/boards/mcb2388/include/board.h
+++ b/boards/mcb2388/include/board.h
@@ -93,6 +93,7 @@ extern "C" {
  */
 #define BTN0_PIN            GPIO_PIN(2, 10)
 #define BTN0_MODE           GPIO_IN
+#define BTN0_INT_FLANK      GPIO_FALLING
 /** @} */
 
 /**