diff --git a/libraries/AP_HAL_ChibiOS/hwdef/CUAV_GPS/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/CUAV_GPS/hwdef.dat
index 3b02def74e..16344dda38 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/CUAV_GPS/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/CUAV_GPS/hwdef.dat
@@ -143,7 +143,8 @@ define HAL_BUILD_AP_PERIPH
 
 define HAL_DEVICE_THREAD_STACK 768
 
-define AP_PARAM_MAX_EMBEDDED_PARAM 0
+# we setup a small defaults.parm
+define AP_PARAM_MAX_EMBEDDED_PARAM 256
 
 # disable dual GPS and GPS blending to save flash space
 define GPS_MAX_RECEIVERS 1