diff --git a/themes/hugodocs/layouts/partials/table-of-contents.html b/themes/hugodocs/layouts/partials/table-of-contents.html
index 9051c8ac4..b2e3e784a 100644
--- a/themes/hugodocs/layouts/partials/table-of-contents.html
+++ b/themes/hugodocs/layouts/partials/table-of-contents.html
@@ -1,7 +1,7 @@
 <aside id="toc">
 	<header>
 		<a href="#page-top">
-		<h3>{{.Title}}</h3>
+		<h3 class="{{.Section}}">{{.Title}}</h3>
 		</a>
 	</header>
 	{{.TableOfContents}}