diff --git a/layouts/_default/single.html b/layouts/_default/single.html
index 2ee0854..676b198 100644
--- a/layouts/_default/single.html
+++ b/layouts/_default/single.html
@@ -31,9 +31,9 @@
 
   {{ if (.Params.Toc | default .Site.Params.Toc) }}
     <div class="table-of-contents">
-      <h2>
+      <h1>
         {{ (.Params.TocTitle | default .Site.Params.TocTitle) | default "Table of Contents" }}
-      </h2>
+      </h1>
       {{ .TableOfContents }}
     </div>
   {{ end }}