diff --git a/src/bg.js b/src/bg.js
index 3caa3e4..cc7cfab 100644
--- a/src/bg.js
+++ b/src/bg.js
@@ -7,7 +7,7 @@ var changeIcon = function(color, currentIcon, options) {
 	var ctx = canvas.getContext('2d');
 	var img = new Image();
 
-	if (currentIcon && typeof(currentIcon) !== 'undefined' && currentIcon !== null && currentIcon !== 'undefined') {
+	if (currentIcon && typeof(currentIcon) !== 'undefined' && currentIcon !== null && currentIcon !== "null" && currentIcon !== 'undefined') {
 		img.src = currentIcon;
 	} else {
 		img.src = 'data:image/x-icon;base64,AAABAAEAEBACAAEAAQCwAAAAFgAAACgAAAAQAAAAIAAAAAEAAQAAAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA////AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD//wAA//8AAP//AAD//wAA//8AAP//AAD//wAA//8AAP//AAD//wAA//8AAP//AAD//wAA//8AAP//AAD//wAA';