diff --git a/layouts/index.html b/layouts/index.html
index 5a72af446..9c2afe13f 100644
--- a/layouts/index.html
+++ b/layouts/index.html
@@ -209,7 +209,7 @@
   <p>{{ i18n "Join Us Content" }}</p>
   <div>
     <div class="slack">
-      <img src="/images/home/slack.svg"></img>
+      <img src="/images/home/slack.svg" alt="slack"></img>
       <p>
         <a href="{{ .Site.Params.slackLink }}" target="_blank">
           {{ i18n "Join Slack" }}
@@ -217,7 +217,7 @@
       </p>
     </div>
     <div class="wechat">
-      <img src="/images/home/wechat.svg"></img>
+      <img src="/images/home/wechat.svg" alt="wechat"></img>
       <p>{{ i18n "Join Wechat" }}</p>
     </div>
   </div>