1 files changed, 3 insertions, 1 deletions
diff --git a/addons/mail/static/src/js/models/threads/dm_chat.js b/addons/mail/static/src/js/models/threads/dm_chat.js
index fb524515193..c0ba9c527b0 100644
--- a/addons/mail/static/src/js/models/threads/dm_chat.js
+++ b/addons/mail/static/src/js/models/threads/dm_chat.js
@@ -1,6 +1,7 @@
 odoo.define('mail.model.DMChat', function (require) {
 "use strict";
 
+var ChannelSeenMixin = require('mail.model.ChannelSeenMixin');
 var TwoUserChannel = require('mail.model.TwoUserChannel');
 
 var core = require('web.core');
@@ -11,7 +12,7 @@ var _t = core._t;
  * Any piece of code in JS that make use of DMs must ideally interact with
  * such objects, instead of direct data from the server.
  */
-var DMChat = TwoUserChannel.extend({
+var DMChat = TwoUserChannel.extend(ChannelSeenMixin, {
     /**
      * @override
      * @param {Object} params
@@ -27,6 +28,7 @@ var DMChat = TwoUserChannel.extend({
      */
     init: function (params) {
         this._super.apply(this, arguments);
+        ChannelSeenMixin.init.apply(this, arguments);
 
         var data = params.data;