--- /usr/lib/python3/dist-packages/UpdateManager/Dialogs.py	2014-01-06 15:00:38.295942692 -0800
+++ Dialogs.py	2014-01-06 15:05:35.967939540 -0800
@@ -278,13 +278,11 @@
         self.set_header(
             _("The computer needs to restart to finish installing updates."))
         self.focus_button = self.add_button(_("_Restart"), self.restart)
+        self.close_button = self.add_button(_("Restart _Later"),
+            self.window_main.close)
 
     def start(self):
         Dialog.start(self)
-        # Turn off close button
-        self.window_main.realize()
-        self.window_main.get_window().set_functions(Gdk.WMFunction.MOVE |
-                                                    Gdk.WMFunction.MINIMIZE)
 
     def restart(self, *args, **kwargs):
         self._request_reboot_via_session_manager()