diff --git a/src/view.map.js b/src/view.map.js
index b34066a1..bb22d033 100644
--- a/src/view.map.js
+++ b/src/view.map.js
@@ -397,7 +397,7 @@ my.Map = Backbone.View.extend({
     var self = this;
     this.map = new L.Map(this.$map.get(0));
 
-    var mapUrl = "http://otile{s}.mqcdn.com/tiles/1.0.0/osm/{z}/{x}/{y}.png";
+    var mapUrl = "//otile{s}.mqcdn.com/tiles/1.0.0/osm/{z}/{x}/{y}.png";
     var osmAttribution = 'Map data &copy; 2011 OpenStreetMap contributors, Tiles Courtesy of <a href="http://www.mapquest.com/" target="_blank">MapQuest</a> <img src="http://developer.mapquest.com/content/osm/mq_logo.png">';
     var bg = new L.TileLayer(mapUrl, {maxZoom: 18, attribution: osmAttribution ,subdomains: '1234'});
     this.map.addLayer(bg);