diff --git a/app/assets/javascripts/discourse/app/models/user.js b/app/assets/javascripts/discourse/app/models/user.js
index 931c8b73bde..de643e6118e 100644
--- a/app/assets/javascripts/discourse/app/models/user.js
+++ b/app/assets/javascripts/discourse/app/models/user.js
@@ -1,3 +1,4 @@
+import { tracked } from "@glimmer/tracking";
 import { getOwner, setOwner } from "@ember/application";
 import { A } from "@ember/array";
 import EmberObject, { computed, get, getProperties } from "@ember/object";
@@ -175,6 +176,8 @@ export default class User extends RestModel.extend(Evented) {
   @service appEvents;
   @service userTips;
 
+  @tracked do_not_disturb_until;
+
   @userOption("mailing_list_mode") mailing_list_mode;
   @userOption("external_links_in_new_tab") external_links_in_new_tab;
   @userOption("enable_quoting") enable_quoting;