diff --git a/libraries/AP_HAL/AP_HAL_Boards.h b/libraries/AP_HAL/AP_HAL_Boards.h
index 027b8f4a07bd12..7337e3dcbefd12 100644
--- a/libraries/AP_HAL/AP_HAL_Boards.h
+++ b/libraries/AP_HAL/AP_HAL_Boards.h
@@ -303,6 +303,10 @@
 #endif
 #endif
 
+#ifndef AP_BOOTLOADER_FLASHING_ENABLED
+#define AP_BOOTLOADER_FLASHING_ENABLED 0
+#endif
+
 #ifndef HAL_HNF_MAX_FILTERS
 // On an F7 The difference in CPU load between 1 notch and 24 notches is about 2%
 // The difference in CPU load between 1Khz backend and 2Khz backend is about 10%