diff --git a/libraries/AP_HAL_ChibiOS/hwdef/skyviper-v2450/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/skyviper-v2450/hwdef.dat
index b1c5c3ccbc..ce2aa4eeb2 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/skyviper-v2450/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/skyviper-v2450/hwdef.dat
@@ -68,7 +68,6 @@ env BUILD_ABIN True
 # Disable un-needed hardware drivers
 define AP_AIRSPEED_ENABLED 0
 define AP_FETTEC_ONEWIRE_ENABLED 0
-define HAL_MOUNT_ENABLED 0
 define AP_OPTICALFLOW_ENABLED 0
 define BEACON_ENABLED 0
 define GPS_MOVING_BASELINE 0
@@ -84,6 +83,7 @@ define HAL_EFI_ENABLED 0
 define HAL_EXTERNAL_AHRS_ENABLED 0
 define HAL_GENERATOR_ENABLED 0
 define HAL_HOTT_TELEM_ENABLED 0
+define HAL_MOUNT_ENABLED 0
 define HAL_MSP_SENSORS_ENABLED 0
 define HAL_NMEA_OUTPUT_ENABLED 0
 define HAL_PARACHUTE_ENABLED 0
@@ -92,8 +92,10 @@ define HAL_RUNCAM_ENABLED 0
 define HAL_SMARTAUDIO_ENABLED 0
 define HAL_SPEKTRUM_TELEM_ENABLED 0
 define HAL_SPRAYER_ENABLED 0
+define HAL_SUPPORT_RCOUT_SERIAL 0
 define HAL_TORQEEDO_ENABLED 0
 define HAL_WITH_ESC_TELEM 0
+define HAL_WITH_ESC_TELEM 0
 define LANDING_GEAR_ENABLED 0
 define MODE_TURTLE_ENABLED 0
 define WINCH_ENABLED 0