diff --git a/suite/common/pref/pref-popups.xul b/suite/common/pref/pref-popups.xul
index a2c7ef6eddb1..fea8f175314e 100644
--- a/suite/common/pref/pref-popups.xul
+++ b/suite/common/pref/pref-popups.xul
@@ -53,7 +53,7 @@
   <script type="application/x-javascript">
     <![CDATA[
 
-      var _elementIDs = ["popupPolicy","playSound","playSoundUrl","displayIcon"];
+      var _elementIDs = ["popupPolicy","playSound","playSoundUrl","displayIcon","prefillWhitelist"];
 
       var gPolicyButton;
       var gSoundCheckbox;