--- ./zen/page.tpl.php	2007-01-29 06:28:05.000000000 +1100
+++ page.tpl.php	2007-01-30 00:58:52.000000000 +1100
@@ -49,7 +49,7 @@
             </div>
           <?php endif; ?>
           
-          <?php if ($secondary_links): ?>
+          <?php if (isset($secondary_links)): ?>
             <div id="secondary" class="clear-block">
               <?php print theme('menu_links', $secondary_links); ?>
             </div>