diff --git a/extensions/flags/js/forum/src/addFlagsToPosts.js b/extensions/flags/js/forum/src/addFlagsToPosts.js
index 2c5290fe8..fdd811a9e 100644
--- a/extensions/flags/js/forum/src/addFlagsToPosts.js
+++ b/extensions/flags/js/forum/src/addFlagsToPosts.js
@@ -101,7 +101,7 @@ export default function() {
       const detail = flag.reasonDetail();
 
       return [
-        app.trans(reason ? 'flarum-flags.forum.flagged_by_with_reason' : 'flarum-flags.forum.flagged_by', {user, reason}),
+        app.translator.trans(reason ? 'flarum-flags.forum.flagged_by_with_reason' : 'flarum-flags.forum.flagged_by', {user, reason}),
         detail ? <span className="Post-flagged-detail">{detail}</span> : ''
       ];
     }
diff --git a/extensions/flags/js/forum/src/components/FlagList.js b/extensions/flags/js/forum/src/components/FlagList.js
index 62c37778d..3b7da06fc 100644
--- a/extensions/flags/js/forum/src/components/FlagList.js
+++ b/extensions/flags/js/forum/src/components/FlagList.js
@@ -50,7 +50,7 @@ export default class FlagList extends Component {
                 );
               })
               : !this.loading
-                ? <div className="NotificationList-empty">{app.trans('flarum-flags.forum.no_flags')}</div>
+                ? <div className="NotificationList-empty">{app.translator.trans('flarum-flags.forum.no_flags')}</div>
                 : LoadingIndicator.component({className: 'LoadingIndicator--block'})}
           </ul>
         </div>