--- a/browser/components/preferences/sitePermissions.xul
+++ b/browser/components/preferences/sitePermissions.xul
@@ -39,17 +39,16 @@
     <richlistbox id="permissionsBox" selected="false"
                  hidecolumnpicker="true" flex="1"
                  onkeypress="gSitePermissionsManager.onPermissionKeyPress(event);"
                  onselect="gSitePermissionsManager.onPermissionSelect();">
       <listheader>
         <treecol id="siteCol" label="&treehead.sitename2.label;" flex="3"
                  persist="width" width="50"
                  onclick="gSitePermissionsManager.buildPermissionsList(event.target)"/>
-        <splitter class="tree-splitter"/>
         <treecol id="statusCol" label="&treehead.status.label;" flex="1"
                  persist="width" width="50" data-isCurrentSortCol="true"
                  onclick="gSitePermissionsManager.buildPermissionsList(event.target);"/>
       </listheader>
     </richlistbox>
   </vbox>
   <vbox>
     <hbox class="actionButtons" align="left" flex="1">