diff --git a/firefox/user.js b/firefox/user.js
index caaf66a..094871f 100644
--- a/firefox/user.js
+++ b/firefox/user.js
@@ -89,6 +89,7 @@ user_pref("extensions.pocket.oAuthConsumerKey", "");
 user_pref("extensions.pocket.site", "");
 user_pref("browser.toolbarbuttons.introduced.pocket-button", true);
 user_pref("extensions.unifiedExtensions.enabled", false);
+user_pref("extensions.quarantinedDomains.enabled", false);
 
 user_pref("browser.search.suggest.enabled", false);
 user_pref("browser.search.widget.inNavBar", true);