diff --git a/ground/openpilotgcs/src/libs/opmapcontrol/src/mapwidget/uavitem.cpp b/ground/openpilotgcs/src/libs/opmapcontrol/src/mapwidget/uavitem.cpp
index baaf8b24a..9ef52384b 100644
--- a/ground/openpilotgcs/src/libs/opmapcontrol/src/mapwidget/uavitem.cpp
+++ b/ground/openpilotgcs/src/libs/opmapcontrol/src/mapwidget/uavitem.cpp
@@ -28,10 +28,11 @@
 #include "uavitem.h"
 #include <math.h>
 
-static double groundspeed_mps_filt;
-
 namespace mapcontrol
 {
+
+    double UAVItem::groundspeed_mps_filt = 0;
+
     UAVItem::UAVItem(MapGraphicItem* map,OPMapWidget* parent,QString uavPic):map(map),mapwidget(parent),showtrail(true),showtrailline(true),trailtime(5),traildistance(50),autosetreached(true)
       ,autosetdistance(100),altitude(0),showUAVInfo(false)
     {
@@ -60,7 +61,6 @@ namespace mapcontrol
         Q_UNUSED(option);
         Q_UNUSED(widget);
 
-
         //Draw plane
         painter->drawPixmap(-pic.width()/2,-pic.height()/2,pic);
 
diff --git a/ground/openpilotgcs/src/libs/opmapcontrol/src/mapwidget/uavitem.h b/ground/openpilotgcs/src/libs/opmapcontrol/src/mapwidget/uavitem.h
index 67ef23d65..8e59e268c 100644
--- a/ground/openpilotgcs/src/libs/opmapcontrol/src/mapwidget/uavitem.h
+++ b/ground/openpilotgcs/src/libs/opmapcontrol/src/mapwidget/uavitem.h
@@ -248,7 +248,7 @@ namespace mapcontrol
         double Distance3D(internals::PointLatLng const& coord, int const& altitude);
         double autosetdistance;
         bool showUAVInfo;
-      //  QRectF rect;
+        static double groundspeed_mps_filt;
 
     public slots: