diff --git a/docs/theme/nature/layout.html b/docs/theme/nature/layout.html
--- a/docs/theme/nature/layout.html
+++ b/docs/theme/nature/layout.html
@@ -17,4 +17,4 @@
      <img src="http://api.flattr.com/button/flattr-badge-large.png" alt="Flattr this" title="Flattr this" border="0" /></a>
     </div>
 </div>
-{% endblock %}}
+{% endblock %}