diff --git a/firefox/user-overrides.js b/firefox/user-overrides.js
index c642ace..2d2a394 100755
--- a/firefox/user-overrides.js
+++ b/firefox/user-overrides.js
@@ -43,6 +43,8 @@ user_pref("network.trr.mode", 0);
 user_pref("network.trr.uri", "https://dns.myservermanager.com/dns-query");
 user_pref("network.trr.resolvers", '[{ "name": "dns.myservermanager.com", "url": "https://dns.myservermanager.com/dns-query" }]');
 user_pref("network.trr.excluded-domains", "fritz.box,fritz.nas");
+user_pref("network.dns.disableIPv6", false);
+user_pref("network.dns.disablePrefetch", false);
 //user_pref("security.OCSP.enabled", 0);
 //user_pref("security.OCSP.require", false);