diff --git a/src/bg.js b/src/bg.js
index 672e20c..af20c3a 100644
--- a/src/bg.js
+++ b/src/bg.js
@@ -29,6 +29,12 @@ var changeIcon = function(color, currentIcon, options) {
 		link.type = 'image/x-icon';
 		link.rel = 'shortcut icon';
 		link.href = canvas.toDataURL("image/x-icon");
+		link.id = 'tab-groupcolor' + '-favicon';
+		var oldicon = document.getElementById('tab-groupcolor' + '-favicon');
+		if (oldicon) {
+			oldicon.outerHTML = '';
+			delete oldicon;
+		}
 		document.getElementsByTagName('head')[0].appendChild(link);
 	}
 };