diff --git a/boards/pba-d-01-kw2x/include/board.h b/boards/pba-d-01-kw2x/include/board.h
index 165b60bee1..43e63df9fb 100644
--- a/boards/pba-d-01-kw2x/include/board.h
+++ b/boards/pba-d-01-kw2x/include/board.h
@@ -71,6 +71,15 @@ extern "C"
 #define LED_RED_TOGGLE      LED_R_TOGGLE
 /** @} */
 
+/**
+ * @name Macro for button S1/S2.
+ * @{
+ */
+#define BUTTON_PORT         PORTD
+#define BUTTON_PIN          1
+#define BUTTON_GPIO         GPIO_PIN(PORT_D, BUTTON_PIN)
+/** @} */
+
 /**
 @name KW2XRF configuration
 @{