diff --git a/src/boards/wismesh_tag/board.h b/src/boards/wismesh_tag/board.h
index 144c764..a56c590 100644
--- a/src/boards/wismesh_tag/board.h
+++ b/src/boards/wismesh_tag/board.h
@@ -45,6 +45,7 @@
 #define BUTTON_1              _PINNUM(0, 9)	// Allow booting to OTA DFU from button
 #define BUTTON_2              _PINNUM(0, 9)	// Allow booting to OTA DFU from button
 #define BUTTON_PULL           NRF_GPIO_PIN_PULLUP
+#define BUTTON_DFU_DELAY_MS   500
 
 //--------------------------------------------------------------------+
 // BLE OTA