diff --git a/canvasblocker.xpi b/canvasblocker.xpi
index 35e3de6..8db8e30 100644
Binary files a/canvasblocker.xpi and b/canvasblocker.xpi differ
diff --git a/lib/main.js b/lib/main.js
index f77a171..752cf56 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -178,16 +178,16 @@
 											updateIgnoreList();
 										}
 									},
-									// {
-										// label: _("whitelistURL"),
-										// accessKey: "",
-										// callback: function(){
-											// prefs.whiteList += (prefs.whiteList? ",": "") + url;
-											// prefService.set("extensions.CanvasBlocker@kkapsner.de.whiteList", prefs.whiteList);
-											// updateWhiteList();
-											// workers.forEach(checkWorker);
-										// }
-									// },
+									{
+										label: _("whitelistURL"),
+										accessKey: "",
+										callback: function(){
+											prefs.whiteList += (prefs.whiteList? ",": "") + "^" + url.replace(/([\\\+\*\?\[\^\]\$\(\)\{\}\=\!\|\.])/g, "\\$1") + "$";
+											prefService.set("extensions.CanvasBlocker@kkapsner.de.whiteList", prefs.whiteList);
+											updateWhiteList();
+											workers.forEach(checkWorker);
+										}
+									},
 									{
 										label: _("whitelistDomain"),
 										accessKey: "",