diff --git a/overviewer_core/data/js_src/util.js b/overviewer_core/data/js_src/util.js
index 1ad13ea..91120cd 100644
--- a/overviewer_core/data/js_src/util.js
+++ b/overviewer_core/data/js_src/util.js
@@ -138,6 +138,7 @@ overviewer.util = {
                 noWrap: true,
                 maxZoom: obj.maxZoom,
                 minZoom: obj.minZoom,
+                errorTileUrl: obj.base + obj.path + "/blank.png",
             });
             myLayer.getTileUrl = overviewer.gmap.getTileUrlGenerator(obj.path, obj.base, obj.imgextension);