diff --git a/src/GUI/mapview.cpp b/src/GUI/mapview.cpp
index 7777a859..464ad262 100644
--- a/src/GUI/mapview.cpp
+++ b/src/GUI/mapview.cpp
@@ -76,6 +76,7 @@ MapView::MapView(Map *map, POI *poi, QWidget *parent)
 	_digitalZoom = 0;
 
 	_map->setBackgroundColor(_backgroundColor);
+	_res = _map->resolution(_map->bounds());
 	_scene->setSceneRect(_map->bounds());
 
 	centerOn(_scene->sceneRect().center());