diff --git a/libraries/AP_GPS/AP_GPS_UBLOX.cpp b/libraries/AP_GPS/AP_GPS_UBLOX.cpp
index d351fda4ed..12856e3958 100644
--- a/libraries/AP_GPS/AP_GPS_UBLOX.cpp
+++ b/libraries/AP_GPS/AP_GPS_UBLOX.cpp
@@ -49,6 +49,9 @@ AP_GPS_UBLOX::AP_GPS_UBLOX(AP_GPS &_gps, AP_GPS::GPS_State &_state, AP_HAL::UART
     _payload_counter(0),
     _fix_count(0),
     _class(0),
+    _cfg_saved(false),
+    _last_cfg_sent_time(0),
+    _num_cfg_save_tries(0),
     _new_position(0),
     _new_speed(0),
     need_rate_update(false),
@@ -56,10 +59,7 @@ AP_GPS_UBLOX::AP_GPS_UBLOX(AP_GPS &_gps, AP_GPS::GPS_State &_state, AP_HAL::UART
     next_fix(AP_GPS::NO_FIX),
     rate_update_step(0),
     _last_5hz_time(0),
-    noReceivedHdop(true),
-    _cfg_saved(false),
-    _last_cfg_sent_time(0),
-    _num_cfg_save_tries(0)
+    noReceivedHdop(true)
 {
     // stop any config strings that are pending
     gps.send_blob_start(state.instance, NULL, 0);
diff --git a/libraries/AP_GPS/AP_GPS_UBLOX.h b/libraries/AP_GPS/AP_GPS_UBLOX.h
index 53766468aa..4322539256 100644
--- a/libraries/AP_GPS/AP_GPS_UBLOX.h
+++ b/libraries/AP_GPS/AP_GPS_UBLOX.h
@@ -425,7 +425,7 @@ private:
     uint8_t rate_update_step;
     uint32_t _last_5hz_time;
 
-    bool noReceivedHdop = true;
+    bool noReceivedHdop;
 
     void 	    _configure_navigation_rate(uint16_t rate_ms);
     void        _configure_message_rate(uint8_t msg_class, uint8_t msg_id, uint8_t rate);