diff --git a/_includes/sidebar.html b/_includes/sidebar.html
index 083f037..445bdda 100644
--- a/_includes/sidebar.html
+++ b/_includes/sidebar.html
@@ -14,13 +14,13 @@
           </div></a>
         </div>
 
-        <ul id="nav-toc" class="md-nav__list" data-md-scrollfix="">
+        <ul class="md-nav__list" data-md-scrollfix="">
              <li class="md-nav__item md-nav__item--active">
             <input class="md-toggle md-nav__toggle" data-md-toggle="toc" id="__toc" type="checkbox"> 
                 <label class="md-nav__link md-nav__link--active" for="__toc">Home</label>
                   <a class="md-nav__link md-nav__link--active" href="{{ site.baseurl }}/" title="Home">Home</a>
                
-               <nav class="md-nav md-nav--primary md-nav--secondary">
+               <nav class="md-nav md-nav--secondary">
               <label class="md-nav__title" for="__toc">Table of contents</label>
               <ul class="md-nav__list" data-md-scrollfix="">
                 {% for section in site.data.toc %}