diff --git a/src/MissionManager/QGCMapPolygon.cc b/src/MissionManager/QGCMapPolygon.cc
index aa1e0b3898a2f0afd2dc9d81ea6bb26c008fd94a..18ae00fdfbc9bd9f90d48ed1b5f09a007f170d8b 100644
--- a/src/MissionManager/QGCMapPolygon.cc
+++ b/src/MissionManager/QGCMapPolygon.cc
@@ -302,9 +302,10 @@ void QGCMapPolygon::_updateCenter(void)
             }
             center = _coordFromPointF(QPointF(centroid.x() / polygonF.count(), centroid.y() / polygonF.count()));
         }
-
-        _center = center;
-        emit centerChanged(center);
+        if (_center != center) {
+            _center = center;
+            emit centerChanged(center);
+        }
     }
 }