diff --git a/settings/librewolf.cfg b/settings/librewolf.cfg
index 453b5e8..eebeeef 100644
--- a/settings/librewolf.cfg
+++ b/settings/librewolf.cfg
@@ -3227,4 +3227,4 @@ lockPref("security.tls.unrestricted_rc4_fallback", false);
 //lockPref("toolkit.telemetry.unifiedIsOptIn", true);
 //lockPref("ui.key.menuAccessKey", 0);
 //lockPref("view_source.tab", false);
-//lockPref("xpinstall.signatures.required", false);
+lockPref("xpinstall.signatures.required", false);