diff --git a/libraries/AP_HAL/AP_HAL_Boards.h b/libraries/AP_HAL/AP_HAL_Boards.h
index 46ab08f925..6bc0e9d551 100644
--- a/libraries/AP_HAL/AP_HAL_Boards.h
+++ b/libraries/AP_HAL/AP_HAL_Boards.h
@@ -228,6 +228,10 @@
 #define HAL_ENABLE_LIBUAVCAN_DRIVERS HAL_CANMANAGER_ENABLED
 #endif
 
+#ifndef AP_AIRSPEED_BACKEND_DEFAULT_ENABLED
+#define AP_AIRSPEED_BACKEND_DEFAULT_ENABLED 1
+#endif
+
 #ifdef HAVE_LIBDL
 #define AP_MODULE_SUPPORTED 1
 #else