--- a/mobile/chrome/content/browser.xul
+++ b/mobile/chrome/content/browser.xul
@@ -415,19 +415,19 @@
           </hbox>
           <notificationbox id="prefs-messages" flex="1">
             <richlistbox id="prefs-list" seltype="single" flex="1" onselect="this.ensureSelectedElementIsVisible()">
               <setting title="&about.title;" type="control">
                 <button id="prefs-about-button" label="&about.button;"
 #ifdef MOZ_OFFICIAL_BRANDING
 # these two point to the same page, this just matters for what shows up in the
 # URL bar
-                        oncommand="BrowserUI.newTab('about:firefox', true);"/>
+                        oncommand="BrowserUI.newTab('about:firefox');"/>
 #else
-                        oncommand="BrowserUI.newTab('about:fennec', true);"/>
+                        oncommand="BrowserUI.newTab('about:fennec');"/>
 #endif
               </setting>
               <setting id="prefs-uilanguage" title="&language.title;" type="control">
                 <menulist id="prefs-languages" oncommand="PreferencesView.updateLocale();">
                   <menupopup>
                     <menuitem id="prefs-languages-auto" label="&language.auto;" value="auto"/>
                   </menupopup>
                 </menulist>