diff --git a/user.js b/user.js
index 3d4b0ed..7f6bd0e 100644
--- a/user.js
+++ b/user.js
@@ -229,6 +229,9 @@ user_pref("identity.sendtabpromo.url", "");
 user_pref("network.proxy.socks_remote_dns", true);
 user_pref("media.peerconnection.ice.proxy_only_if_behind_proxy", true);
 
+// Qualified Website Authentication Certificates (QWACs)
+user_pref("security.qwacs.enabled", false);
+
 // Recommended
 user_pref("browser.topsites.contile.enabled", false);
 user_pref("browser.topsites.contile.endpoint", "");