diff --git a/public/src/modules/storage.js b/public/src/modules/storage.js
index 2fdf38f8af..5cb6051586 100644
--- a/public/src/modules/storage.js
+++ b/public/src/modules/storage.js
@@ -8,6 +8,7 @@ define('storage', function () {
 		this._store = {};
 		this._keys = [];
 	}
+	Storage.prototype.isMock = true;
 	Storage.prototype.setItem = function (key, val) {
 		key = String(key);
 		if (this._keys.indexOf(key) === -1) {