diff --git a/extensions/lock/js/forum/src/addLockBadge.js b/extensions/lock/js/forum/src/addLockBadge.js
index b72b0d13c..ed3f8b3e9 100644
--- a/extensions/lock/js/forum/src/addLockBadge.js
+++ b/extensions/lock/js/forum/src/addLockBadge.js
@@ -7,7 +7,7 @@ export default function addLockBadge() {
     if (this.isLocked()) {
       badges.add('locked', Badge.component({
         type: 'locked',
-        label: app.trans('flarum-lock.forum.locked'),
+        label: app.translator.trans('flarum-lock.forum.locked'),
         icon: 'lock'
       }));
     }
diff --git a/extensions/lock/js/forum/src/addLockControl.js b/extensions/lock/js/forum/src/addLockControl.js
index 67678cbe6..308851a03 100644
--- a/extensions/lock/js/forum/src/addLockControl.js
+++ b/extensions/lock/js/forum/src/addLockControl.js
@@ -7,7 +7,7 @@ export default function addLockControl() {
   extend(DiscussionControls, 'moderationControls', function(items, discussion) {
     if (discussion.canLock()) {
       items.add('lock', Button.component({
-        children: app.trans(discussion.isLocked() ? 'flarum-lock.forum.unlock' : 'flarum-lock.forum.lock'),
+        children: app.translator.trans(discussion.isLocked() ? 'flarum-lock.forum.unlock' : 'flarum-lock.forum.lock'),
         icon: 'lock',
         onclick: this.lockAction.bind(discussion)
       }));
diff --git a/extensions/lock/js/forum/src/components/DiscussionLockedNotification.js b/extensions/lock/js/forum/src/components/DiscussionLockedNotification.js
index 629efc2f6..b74da8f64 100644
--- a/extensions/lock/js/forum/src/components/DiscussionLockedNotification.js
+++ b/extensions/lock/js/forum/src/components/DiscussionLockedNotification.js
@@ -12,6 +12,6 @@ export default class DiscussionLockedNotification extends Notification {
   }
 
   content() {
-    return app.trans('flarum-lock.forum.discussion_locked_notification', {user: this.props.notification.sender()});
+    return app.translator.trans('flarum-lock.forum.discussion_locked_notification', {user: this.props.notification.sender()});
   }
 }
diff --git a/extensions/lock/js/forum/src/main.js b/extensions/lock/js/forum/src/main.js
index 97ebdcbef..b93f18117 100644
--- a/extensions/lock/js/forum/src/main.js
+++ b/extensions/lock/js/forum/src/main.js
@@ -23,7 +23,7 @@ app.initializers.add('flarum-lock', () => {
     items.add('discussionLocked', {
       name: 'discussionLocked',
       icon: 'lock',
-      label: app.trans('flarum-lock.forum.notify_discussion_locked')
+      label: app.translator.trans('flarum-lock.forum.notify_discussion_locked')
     });
   });
-});
\ No newline at end of file
+});