diff --git a/libraries/AP_HAL_ChibiOS/hwdef/HitecMosaic/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/HitecMosaic/hwdef.dat
index 504dfdfcee..1c8cdb8db4 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/HitecMosaic/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/HitecMosaic/hwdef.dat
@@ -172,4 +172,5 @@ define HAL_PERIPH_ENABLE_BARO
 define HAL_GPS_TYPE_DEFAULT 10
 define HAL_GPS_COM_PORT_DEFAULT 3
 define GPS_SBF_STREAM_NUMBER 3
+define GPS_SBF_EXTRA_CONFIG "sdfa, DSK1, DeleteOldest\n", "sfn, DSK1, Incremental, Mosaic\n", "sfno, off\n"