diff --git a/extensions/mentions/js/forum/src/addComposerAutocomplete.js b/extensions/mentions/js/forum/src/addComposerAutocomplete.js
index bb8caa4fb..1ba2d6d6e 100644
--- a/extensions/mentions/js/forum/src/addComposerAutocomplete.js
+++ b/extensions/mentions/js/forum/src/addComposerAutocomplete.js
@@ -108,7 +108,7 @@ export default function addComposerAutocomplete() {
                   const user = post.user();
                   suggestions.push(
                     makeSuggestion(user, '@' + user.username() + '#' + post.id(), [
-                      app.trans('flarum-mentions.forum.reply_to_post', {number: post.number()}), ' — ',
+                      app.translator.trans('flarum-mentions.forum.reply_to_post', {number: post.number()}), ' — ',
                       truncate(post.contentPlain(), 200)
                     ], 'MentionsDropdown-post')
                   );
diff --git a/extensions/mentions/js/forum/src/addMentionedByList.js b/extensions/mentions/js/forum/src/addMentionedByList.js
index 01d897512..d01755273 100644
--- a/extensions/mentions/js/forum/src/addMentionedByList.js
+++ b/extensions/mentions/js/forum/src/addMentionedByList.js
@@ -91,7 +91,7 @@ export default function addMentionedByList() {
               config={m.route}
               onclick={hidePreview}
               data-number={reply.number()}>
-              {app.session.user === user ? app.trans('flarum-mentions.forum.you') : username(user)}
+              {app.session.user === user ? app.translator.trans('flarum-mentions.forum.you') : username(user)}
             </a>
           );
         });
@@ -100,7 +100,7 @@ export default function addMentionedByList() {
         <div className="Post-mentionedBy" config={config}>
           <span className="Post-mentionedBy-summary">
             {icon('reply')}
-            {app.trans('flarum-mentions.forum.post_mentioned_by', {
+            {app.translator.trans('flarum-mentions.forum.post_mentioned_by', {
               count: names.length,
               users: punctuateSeries(names)
             })}
diff --git a/extensions/mentions/js/forum/src/addPostReplyAction.js b/extensions/mentions/js/forum/src/addPostReplyAction.js
index 6b835bd93..b363802f5 100644
--- a/extensions/mentions/js/forum/src/addPostReplyAction.js
+++ b/extensions/mentions/js/forum/src/addPostReplyAction.js
@@ -31,7 +31,7 @@ export default function() {
     items.add('reply',
       Button.component({
         className: 'Button Button--link',
-        children: app.trans('flarum-mentions.forum.reply_link'),
+        children: app.translator.trans('flarum-mentions.forum.reply_link'),
         onclick: () => {
           const quote = window.getSelection().toString();
 
diff --git a/extensions/mentions/js/forum/src/components/PostMentionedNotification.js b/extensions/mentions/js/forum/src/components/PostMentionedNotification.js
index c5407d0d6..15ea4c43b 100644
--- a/extensions/mentions/js/forum/src/components/PostMentionedNotification.js
+++ b/extensions/mentions/js/forum/src/components/PostMentionedNotification.js
@@ -21,11 +21,11 @@ export default class PostMentionedNotification extends Notification {
     const auc = notification.additionalUnreadCount();
     const user = notification.sender();
 
-    return app.trans('flarum-mentions.forum.post_mentioned_notification', {
+    return app.translator.trans('flarum-mentions.forum.post_mentioned_notification', {
       user,
       username: auc ? punctuate([
         username(user),
-        app.trans('flarum-mentions.forum.others', {count: auc})
+        app.translator.trans('flarum-mentions.forum.others', {count: auc})
       ]) : undefined
     });
   }
diff --git a/extensions/mentions/js/forum/src/components/UserMentionedNotification.js b/extensions/mentions/js/forum/src/components/UserMentionedNotification.js
index d0b56ce30..44fe1557e 100644
--- a/extensions/mentions/js/forum/src/components/UserMentionedNotification.js
+++ b/extensions/mentions/js/forum/src/components/UserMentionedNotification.js
@@ -14,7 +14,7 @@ export default class UserMentionedNotification extends Notification {
   content() {
     const user = this.props.notification.sender();
 
-    return app.trans('flarum-mentions.forum.user_mentioned_notification', {user});
+    return app.translator.trans('flarum-mentions.forum.user_mentioned_notification', {user});
   }
 
   excerpt() {
diff --git a/extensions/mentions/js/forum/src/main.js b/extensions/mentions/js/forum/src/main.js
index 129eb6727..418774bd0 100644
--- a/extensions/mentions/js/forum/src/main.js
+++ b/extensions/mentions/js/forum/src/main.js
@@ -35,13 +35,13 @@ app.initializers.add('flarum-mentions', function() {
     items.add('postMentioned', {
       name: 'postMentioned',
       icon: 'reply',
-      label: app.trans('flarum-mentions.forum.notify_post_mentioned')
+      label: app.translator.trans('flarum-mentions.forum.notify_post_mentioned')
     });
 
     items.add('userMentioned', {
       name: 'userMentioned',
       icon: 'at',
-      label: app.trans('flarum-mentions.forum.notify_user_mentioned')
+      label: app.translator.trans('flarum-mentions.forum.notify_user_mentioned')
     });
   });