diff --git a/core/js/js.js b/core/js/js.js
index 6b0c289850..80914e954e 100644
--- a/core/js/js.js
+++ b/core/js/js.js
@@ -5,6 +5,9 @@
  * To the end of config/config.php to enable debug mode.
  * The undefined checks fix the broken ie8 console
  */
+var oc_debug;
+var oc_webroot;
+var oc_requesttoken;
 if (oc_debug !== true || typeof console === "undefined" || typeof console.log === "undefined") {
 	if (!window.console) {
 		window.console = {};