diff --git a/lib/mailbox.php b/lib/mailbox.php
index cb56eb5904..e9e4f78c6b 100644
--- a/lib/mailbox.php
+++ b/lib/mailbox.php
@@ -92,12 +92,6 @@ class MailboxAction extends CurrentUserDesignAction
         $this->showPage();
     }
 
-    function showLocalNav()
-    {
-        $nav = new PersonalGroupNav($this);
-        $nav->show();
-    }
-
     function showNoticeForm()
     {
         $message_form = new MessageForm($this);