diff --git a/js/background.js b/js/background.js
index 1214df5..4496dc5 100644
--- a/js/background.js
+++ b/js/background.js
@@ -27,7 +27,7 @@ function replaceTileserver(request) {
   updateTileserverUrl();
 
   if (tileserver_url == "") {
-    log("no tileserver_url");
+    log(request.url + " -> no tileserver_url");
     return {}
   }