diff --git a/Tools.md b/Tools.md
index 8c2ca97..e75bf25 100644
--- a/Tools.md
+++ b/Tools.md
@@ -4,6 +4,7 @@
 
 - [Test your blocker](http://raymondhill.net/ublock/tests.html)
     - [Web page components](http://raymondhill.net/ublock/tiles1.html)
+    - [Style overriding](http://raymondhill.net/ublock/adbox.html)
     - [Popups](http://raymondhill.net/ublock/popup.html)
     - [ABP Test Pages](https://testpages.adblockplus.org/)
 - [Page load speed](http://www.raymondhill.net/ublock/pageloadspeed.html)