diff --git a/plugins/chat/assets/javascripts/discourse/components/chat-message.js b/plugins/chat/assets/javascripts/discourse/components/chat-message.js
index 20f8af561f1..1931f97db37 100644
--- a/plugins/chat/assets/javascripts/discourse/components/chat-message.js
+++ b/plugins/chat/assets/javascripts/discourse/components/chat-message.js
@@ -521,7 +521,7 @@ export default class ChatMessage extends Component {
     }
 
     this._updateReactionsList(busData.emoji, busData.action, busData.user);
-    this.afterReactionAdded();
+    this.args.afterReactionAdded();
   }
 
   get capabilities() {