--- a/browser/components/customizableui/content/panelUI.inc.xul
+++ b/browser/components/customizableui/content/panelUI.inc.xul
@@ -183,17 +183,17 @@
       <vbox class="panel-subview-body">
         <hbox id="PanelUI-panic-timeframe">
           <image id="PanelUI-panic-timeframe-icon" alt=""/>
           <vbox flex="1">
             <hbox id="PanelUI-panic-header">
               <image id="PanelUI-panic-timeframe-icon-small" alt=""/>
               <description id="PanelUI-panic-mainDesc" flex="1">&panicButton.view.mainTimeframeDesc;</description>
             </hbox>
-            <radiogroup id="PanelUI-panic-timeSpan" aria-labelledby="PanelUI-panic-mainDesc">
+            <radiogroup id="PanelUI-panic-timeSpan" aria-labelledby="PanelUI-panic-mainDesc" closemenu="none">
               <radio id="PanelUI-panic-5min" label="&panicButton.view.5min;" selected="true"
                      value="5" class="subviewradio"/>
               <radio id="PanelUI-panic-2hr" label="&panicButton.view.2hr;"
                      value="2" class="subviewradio"/>
               <radio id="PanelUI-panic-day" label="&panicButton.view.day;"
                      value="6" class="subviewradio"/>
             </radiogroup>
           </vbox>