diff --git a/lib/ace/worker/worker_client.js b/lib/ace/worker/worker_client.js
index f024b274..1fba2f7e 100644
--- a/lib/ace/worker/worker_client.js
+++ b/lib/ace/worker/worker_client.js
@@ -103,8 +103,12 @@ var WorkerClient = function(topLevelNamespaces, packagedJs, module, classname) {
     oop.implement(this, EventEmitter);
 
     this.$normalizePath = function(path) {
-        if (!path.match(/^\w+:/))
-            path = location.protocol + "//" + location.host + location.pathname.replace(/\/[^\/]*$/, "") + "/" + path.replace(/^\//, "");
+        if (!path.match(/^\w+:/)) {
+            path = location.protocol + "//" + location.host 
+                // paths starting with a slash are relative to the root (host)
+                + (path.charAt(0) == "/" ? "" : location.pathname.replace(/\/[^\/]*$/, "")) 
+                + "/" + path.replace(/^[\/]+/, "");
+        }
         return path;
     };