diff --git a/boards/z1/include/board.h b/boards/z1/include/board.h
index 1d74335ad6191cdb7c3baf57085d2c9dcbb1f852..1e308b7eebb849d33aba390a5092912779d120ad 100644
--- a/boards/z1/include/board.h
+++ b/boards/z1/include/board.h
@@ -94,7 +94,7 @@ extern "C" {
  * @name    User button configuration
  * @{
  */
-#define BTN0_PIN            P2IN
+#define BTN0_PIN            GPIO_PIN(2, 5)
 #define BTN0_MASK           (0x20)
 #define BTN0_MODE           GPIO_IN