diff --git a/layouts/_default/single.html b/layouts/_default/single.html
index 43fabdf..b735167 100644
--- a/layouts/_default/single.html
+++ b/layouts/_default/single.html
@@ -47,7 +47,8 @@
     <div id="toc" class="Box Box--blue mb-3">
       <b>{{ .Title }}</b>
       {{- $toc := .TableOfContents -}}
-      {{- $toc := replaceRE `<ul>\n<li>\n<ul>` `<ul>` $toc -}}
+      {{- $toc := replaceRE `<nav id="TableOfContents">\n<ul>\n<li>\n<ul>` `<nav id="TableOfContents"><ul>` $toc -}}
+      {{- $toc := replaceRE `</ul>\n</li>\n</ul>\n</nav>` `</ul>\n</nav>` $toc -}}
       {{- safeHTML $toc -}}
     </div>
   {{ end }}