diff --git a/_layouts/default.html b/_layouts/default.html
index 93ca1bf..78da35b 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -55,7 +55,7 @@
             </a>
             {% endfor %}
 
-            <div class="SelectMenu-item toc">
+            <div class="SelectMenu-item">
               {% if page.jekyll-theme-WuK.default.menu.jekyll-toc.enable %}
               {{ page.jekyll-theme-WuK.default.menu.jekyll-toc.prepend }}
               {% include toc.html html=content ordered=true skipNoIDs=true sanitize=true id="toc" %}
@@ -102,4 +102,4 @@
   {{ page.jekyll-theme-WuK.default.append }}
 </body>
 
-</html>
\ No newline at end of file
+</html>