diff --git a/js/src/forum/components/Post.js b/js/src/forum/components/Post.js
index 3de246a97..4b4d51ad2 100644
--- a/js/src/forum/components/Post.js
+++ b/js/src/forum/components/Post.js
@@ -115,6 +115,10 @@ export default class Post extends Component {
       classes.push('Post--by-actor');
     }
 
+    if (app.current.discussion && app.current.discussion.attribute('startUserId') == this.props.post.user().id()) {
+      classes.push('Post--by-start-user')
+    }
+
     return classes;
   }