diff --git a/Appendix-B:-Firefox-Add-ons.md b/Appendix-B:-Firefox-Add-ons.md
index 5f064b4..41b69cb 100644
--- a/Appendix-B:-Firefox-Add-ons.md
+++ b/Appendix-B:-Firefox-Add-ons.md
@@ -22,8 +22,6 @@ These are all, where applicable, best configured to `deny-all` and whitelist.
 * [NoRedirect](https://addons.mozilla.org/en-US/firefox/addon/noredirect/)
 * *[2] [UAControl](https://addons.mozilla.org/en-US/firefox/addon/uacontrol/)
 * *[2] [User-Agent JS Fixer](https://addons.mozilla.org/en-US/firefox/addon/user-agent-js-fixer/)
-* [Popup Blocker Ultimate](https://addons.mozilla.org/en-US/firefox/addon/popup-blocker-ultimate/)
-  * Still evaluating. I think it has a memory leak.
 * [Pure URL](https://addons.mozilla.org/en-US/firefox/addon/pure-url/)
 * [Google Privacy](https://addons.mozilla.org/en-US/firefox/addon/google-privacy/)
   * That may sound like an oxymoron, but people use google search. Still looking for a better global solution.