diff --git a/addons/mail/static/src/js/discuss.js b/addons/mail/static/src/js/discuss.js
index 0e3b66dd720..5b1405e72e8 100644
--- a/addons/mail/static/src/js/discuss.js
+++ b/addons/mail/static/src/js/discuss.js
@@ -168,9 +168,9 @@ var RenameConversationDialog = Dialog.extend({
             kwargs: {
                 name: name,
             }
-        }).then(function (updatedName) {
+        }).then(function () {
             var channel = self.call('mail_service', 'getThread', self._channelID);
-            channel.setName(updatedName);
+            channel.setName(name);
             self._callback();
         });
     },
diff --git a/addons/mail/static/tests/discuss_tests.js b/addons/mail/static/tests/discuss_tests.js
index 9b63a9dc7d5..6cbcf471b15 100644
--- a/addons/mail/static/tests/discuss_tests.js
+++ b/addons/mail/static/tests/discuss_tests.js
@@ -1507,7 +1507,7 @@ QUnit.test('rename DM conversation', function (assert) {
                 assert.step(args.method);
                 assert.strictEqual(args.args[0], 1);
                 assert.strictEqual(args.kwargs.name, "Demo");
-                return $.when("Demo");
+                return $.when();
             }
             return this._super.apply(this, arguments);
         },