X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/415f6a42c75fda8fbea99fe63ad46dc6ee614d8c..ec8a601309c9a501804d55b112fb72be2493446f:/app/assets/javascripts/osm.js.erb

diff --git a/app/assets/javascripts/osm.js.erb b/app/assets/javascripts/osm.js.erb
index 392bf5e0c..d350b2896 100644
--- a/app/assets/javascripts/osm.js.erb
+++ b/app/assets/javascripts/osm.js.erb
@@ -115,6 +115,10 @@ OSM = {
 
     hash = querystring.parse(hash);
 
+    if (hash.map === undefined) {
+      return false;
+    }
+
     var args = hash.map.split("/");
     if (args.length !== 3) {
       return false;