diff --git a/branding/index.md b/branding/index.md
index 482142b8b274da..aae29563c1f7ac 100644
--- a/branding/index.md
+++ b/branding/index.md
@@ -43,6 +43,6 @@ table img {
 
 <div>
 {% for entity in site.data.contributors %}
-<img src="{{ entity[1] | fetch_entity_avatar_url: entity[0], 50 }}" style="width: 33px;margin:0"/>
+<img src="{{ entity[1] | fetch_entity_avatar_url: entity[0], 50 }}" style="width: 33px;margin:0" alt="avatar"/>
 {% endfor %}
 </div>