diff --git a/libraries/AP_HAL_ChibiOS/hwdef/CarbonixCommon/defaults.parm b/libraries/AP_HAL_ChibiOS/hwdef/CarbonixCommon/defaults.parm
index 822750cfc0..57b4e68463 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/CarbonixCommon/defaults.parm
+++ b/libraries/AP_HAL_ChibiOS/hwdef/CarbonixCommon/defaults.parm
@@ -42,6 +42,7 @@ FLTMODE5,7
 FS_GCS_ENABL,1
 FS_LONG_ACTN,1
 FS_LONG_TIMEOUT,10
+GPS_AUTO_SWITCH,4
 GPS_TYPE,9
 GPS_TYPE2,9
 GPS1_CAN_OVRIDE,19