diff --git a/less/tests/css-tests.html b/less/tests/css-tests.html
index 2551d931ef..b290186211 100644
--- a/less/tests/css-tests.html
+++ b/less/tests/css-tests.html
@@ -669,6 +669,7 @@
 </ul>
 -->
 
+<h4>Standard grid sizing</h4>
 <ul class="thumbnails">
   <li class="span3">
     <a href="#" class="thumbnail">