diff --git a/mozilla/xpfe/global/resources/content/globalOverlay.js b/mozilla/xpfe/global/resources/content/globalOverlay.js
index c96624db32c..dbf6964c70a 100644
--- a/mozilla/xpfe/global/resources/content/globalOverlay.js
+++ b/mozilla/xpfe/global/resources/content/globalOverlay.js
@@ -69,10 +69,7 @@ function goEditCardDialog(abURI, card, okCallback)
 
 function goPreferences(id, pane)
 {
-  var modal = "yes";
-  if (!pref.GetBoolPref("browser.prefWindowModal"))
-    modal = "no";
-  var prefWindow = window.openDialog("chrome://pref/content/pref.xul","PrefWindow", "chrome,modal=" + modal + ",resizable=yes", pane);
+  var prefWindow = window.openDialog("chrome://pref/content/pref.xul","PrefWindow", "chrome,modal=yes,resizable=yes", pane);
 }