diff --git a/libraries/AP_HAL_ChibiOS/hwdef/include/minimize_features.inc b/libraries/AP_HAL_ChibiOS/hwdef/include/minimize_features.inc
index df66fcbeb9..c6d463bb0d 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/include/minimize_features.inc
+++ b/libraries/AP_HAL_ChibiOS/hwdef/include/minimize_features.inc
@@ -35,3 +35,9 @@ define HAL_HOTT_TELEM_ENABLED 0
 
 # smaller boards lose SIRF GPS support
 define AP_GPS_SIRF_ENABLED 0
+
+# minimized boards don't get configuration via SmartAudio by default:
+define AP_SMARTAUDIO_ENABLED 0
+
+# minimized boards don't get configuration via Tramp by default:
+define AP_TRAMP_ENABLED 0
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/skyviper-v2450/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/skyviper-v2450/hwdef.dat
index 6a180b6aac..d5dbf86c6e 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/skyviper-v2450/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/skyviper-v2450/hwdef.dat
@@ -91,7 +91,7 @@ define HAL_NMEA_OUTPUT_ENABLED 0
 define HAL_PARACHUTE_ENABLED 0
 define HAL_PICCOLO_CAN_ENABLE 0
 define HAL_RUNCAM_ENABLED 0
-define HAL_SMARTAUDIO_ENABLED 0
+define AP_SMARTAUDIO_ENABLED 0
 define HAL_SPEKTRUM_TELEM_ENABLED 0
 define HAL_SPRAYER_ENABLED 0
 define HAL_WITH_ESC_TELEM 0