diff --git a/live-cache.js b/live-cache.js
index 7df4c0d..07a70ff 100644
--- a/live-cache.js
+++ b/live-cache.js
@@ -28,9 +28,10 @@
 		};
 
 		this.check = function () {
-			if (undefined === runCache) {
+			if (undefined === runCache || null === runCache) {
 				$.each(self.auto_updates, function () {
-					if (!runCache && $(this).length) {
+					var selector = "" + this;
+					if (!runCache && $(selector).length) {
 						runCache = true;
 					}
 				});