diff --git a/librewolf.cfg b/librewolf.cfg
index 5b7ccd8..9ddd501 100755
--- a/librewolf.cfg
+++ b/librewolf.cfg
@@ -305,6 +305,7 @@ defaultPref("accessibility.force_disabled", 1); // block accessibility services
 defaultPref("devtools.chrome.enabled", false); // disable chrome debugging tools
 defaultPref("devtools.debugger.remote-enabled", false); // default, disable remote debugging
 defaultPref("devtools.remote.adb.extensionURL", ""); // url to download ad extension
+defaultPref("devtools.selfxss.count", 0); // required for devtools console to work
 
 // misc
 defaultPref("browser.shell.checkDefaultBrowser", false); // do not check if default browser