--- a/toolkit/content/components.css
+++ b/toolkit/content/components.css
@@ -1,10 +1,11 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 /* ===== components.css =================================================
   == Styles ported from XBL <resources>, loaded as UA styles in every XUL doc
   ======================================================================= */
 
+@import url("chrome://global/skin/groupbox.css");
 @import url("chrome://global/skin/menu.css");
 @import url("chrome://global/skin/toolbar.css");

--- a/toolkit/content/widgets/groupbox.xml
+++ b/toolkit/content/widgets/groupbox.xml
@@ -4,39 +4,28 @@
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 
 
 <bindings id="groupboxBindings"
    xmlns="http://www.mozilla.org/xbl"
    xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
    xmlns:xbl="http://www.mozilla.org/xbl">
 
-  <binding id="groupbox-base">
-    <resources>
-      <stylesheet src="chrome://global/skin/groupbox.css"/>
-    </resources>
-  </binding>
-
-  <binding id="groupbox"
-    extends="chrome://global/content/bindings/groupbox.xml#groupbox-base">
+  <binding id="groupbox">
     <content>
       <xul:hbox class="groupbox-title" align="center" pack="start">
         <children includes="caption"/>
       </xul:hbox>
       <xul:box flex="1" class="groupbox-body" xbl:inherits="orient,align,pack">
         <children/>
       </xul:box>
     </content>
   </binding>
 
   <binding id="caption" extends="chrome://global/content/bindings/general.xml#basetext">
-    <resources>
-      <stylesheet src="chrome://global/skin/groupbox.css"/>
-    </resources>
-    
     <content>
       <children>
         <xul:image class="caption-icon" xbl:inherits="src=image"/>
         <xul:label class="caption-text" flex="1"
                    xbl:inherits="default,value=label,crop,accesskey"/>
       </children>
     </content>
   </binding>