diff --git a/addons/mail/static/src/components/message/message.js b/addons/mail/static/src/components/message/message.js
index b49d54b005e..4b87281b659 100644
--- a/addons/mail/static/src/components/message/message.js
+++ b/addons/mail/static/src/components/message/message.js
@@ -531,6 +531,7 @@ class Message extends Component {
     _onClickOriginThread(ev) {
         // avoid following dummy href
         ev.preventDefault();
+        this.message.markAsRead();
         this.message.originThread.open();
     }