diff --git a/librewolf.cfg b/librewolf.cfg
index 03524fd..b9a337e 100644
--- a/librewolf.cfg
+++ b/librewolf.cfg
@@ -616,7 +616,7 @@ defaultPref("extensions.webextensions.background-delayed-startup", true); //defa
 // >>>>>>>>>>>>>>>>>>>>
 
 // Pref : Disabling performance addon url [FF64+]
-lockPref("devtools.performance.recording.ui-base-url", "http://localhost:4242");
+defaultPref("devtools.performance.recording.ui-base-url", "http://localhost:55555");
 // Default Value : https://perf-html.io
 
 // Pref : The default set of protocol handlers for irc [FF64+]