--- a/browser/base/content/tabbrowser.xml
+++ b/browser/base/content/tabbrowser.xml
@@ -4862,21 +4862,16 @@
         <children/>
         <xul:toolbarbutton class="tabs-newtab-button"
                            anonid="tabs-newtab-button"
                            command="cmd_newNavigatorTab"
                            onclick="checkForMiddleClick(this, event);"
                            onmouseover="document.getBindingParent(this)._enterNewTab();"
                            onmouseout="document.getBindingParent(this)._leaveNewTab();"
                            tooltip="dynamic-shortcut-tooltip">
-<!--
-  We don't set type="menu-button" by default because we are not shipping
-  "containers" yet (bug 1191418), so more likely the following menu will not be
-  shown.
--->
           <xul:menupopup anonid="tabs-newtab-menupopup"
                          onpopupshowing="return createUserContextMenu(event);" />
         </xul:toolbarbutton>
         <xul:spacer class="closing-tabs-spacer" anonid="closing-tabs-spacer"
                     style="width: 0;"/>
       </xul:arrowscrollbox>
     </content>