diff --git a/libraries/AP_HAL/AP_HAL_Boards.h b/libraries/AP_HAL/AP_HAL_Boards.h
index f1b051d3fd..6c63996d1d 100644
--- a/libraries/AP_HAL/AP_HAL_Boards.h
+++ b/libraries/AP_HAL/AP_HAL_Boards.h
@@ -74,6 +74,7 @@
 #define HAL_BOARD_SUBTYPE_CHIBIOS_AIRBOTF4      5012
 #define HAL_BOARD_SUBTYPE_CHIBIOS_FMUV5         5013
 #define HAL_BOARD_SUBTYPE_CHIBIOS_MATEKF405WING 5014
+#define HAL_BOARD_SUBTYPE_CHIBIOS_FMUV4PRO      5015
 
 /* InertialSensor driver types */
 #define HAL_INS_NONE         0