--- a/browser/base/content/navigator-toolbox.inc.xhtml
+++ b/browser/base/content/navigator-toolbox.inc.xhtml
@@ -43,6 +43,7 @@
                          oncommand="FirefoxViewHandler.openTab();"
                          onmousedown="FirefoxViewHandler.openToolbarMouseEvent(event);"
                          cui-areatype="toolbar"
+                         hidden="true"
                          removable="true"/>
 
           <tabs id="tabbrowser-tabs"