diff --git a/site/static/layouts/tucked-menu-vertical/index.html b/site/static/layouts/tucked-menu-vertical/index.html
index 68d00973f..0a376f66f 100644
--- a/site/static/layouts/tucked-menu-vertical/index.html
+++ b/site/static/layouts/tucked-menu-vertical/index.html
@@ -289,7 +289,7 @@ <h1>Responsive Horizontal-to-Vertical Menu</h1>
       &lt;script&gt;
       (function (window, document) {
       var menu &#x3D; document.getElementById(&#x27;menu&#x27;),
-          rollback,
+          rollBack,
           WINDOW_CHANGE_EVENT &#x3D; (&#x27;onorientationchange&#x27; in window) ? &#x27;orientationchange&#x27;:&#x27;resize&#x27;;
 
       function toggleHorizontal() {