diff --git a/lib/ace/worker/worker_client.js b/lib/ace/worker/worker_client.js
index 7a5cfc5f..0ec7a6a3 100644
--- a/lib/ace/worker/worker_client.js
+++ b/lib/ace/worker/worker_client.js
@@ -66,7 +66,7 @@ var WorkerClient = function(topLevelNamespaces, mod, classname) {
         var tlns = {};
         for (var i=0; i<topLevelNamespaces.length; i++) {
             var ns = topLevelNamespaces[i];
-            var path = this.$normalizePath(require.toUrl(ns, null, "_").replace(/.js$/, ""));
+            var path = this.$normalizePath(require.toUrl(ns, null, "_").replace(/.js(\?.*)?$/, ""));
 
             tlns[ns] = path;
         }