diff --git a/templates/repo/header.tmpl b/templates/repo/header.tmpl
index 7a7201eb3078c..2588243c676e8 100644
--- a/templates/repo/header.tmpl
+++ b/templates/repo/header.tmpl
@@ -3,7 +3,7 @@
 	<div class="ui container">
 		<div class="repo-header">
 			<div class="repo-title-wrap df fc">
-				<div class="repo-title">
+				<div class="repo-title" role="heading" aria-level="1">
 					{{$avatar := (repoAvatar . 32 "mr-3")}}
 					{{if $avatar}}
 						{{$avatar}}
diff --git a/templates/repo/issue/navbar.tmpl b/templates/repo/issue/navbar.tmpl
index 1e576796579e0..fce835d66a32c 100644
--- a/templates/repo/issue/navbar.tmpl
+++ b/templates/repo/issue/navbar.tmpl
@@ -1,4 +1,4 @@
-<div class="ui compact left small menu">
+<h2 class="ui compact small menu header">
 	<a class="{{if .PageIsLabels}}active {{end}}item" href="{{.RepoLink}}/labels">{{.locale.Tr "repo.labels"}}</a>
 	<a class="{{if .PageIsMilestones}}active {{end}}item" href="{{.RepoLink}}/milestones">{{.locale.Tr "repo.milestones"}}</a>
-</div>
+</h2>