diff --git a/lighthouse-core/report/html/templates.html b/lighthouse-core/report/html/templates.html
index 26687d46d844..a418bf9f1fbe 100644
--- a/lighthouse-core/report/html/templates.html
+++ b/lighthouse-core/report/html/templates.html
@@ -45,7 +45,7 @@
 <!-- Lighthouse category header -->
 <template id="tmpl-lh-category-header">
   <div class="lh-category-header">
-    <div class="lh-score__gauge"></div>
+    <div class="lh-score__gauge" role="heading" aria-level="2"></div>
     <div class="lh-category-header__description"></div>
   </div>
 </template>