diff --git a/src/Core/Discussions/Commands/StartDiscussionHandler.php b/src/Core/Discussions/Commands/StartDiscussionHandler.php
index 79eddf4f2..0e1456d7f 100644
--- a/src/Core/Discussions/Commands/StartDiscussionHandler.php
+++ b/src/Core/Discussions/Commands/StartDiscussionHandler.php
@@ -23,6 +23,7 @@ class StartDiscussionHandler
 
     /**
      * @param Dispatcher $bus
+     * @param Forum $forum
      */
     public function __construct(Dispatcher $bus, Forum $forum)
     {
diff --git a/src/Core/Users/UsersServiceProvider.php b/src/Core/Users/UsersServiceProvider.php
index 9381ae7fd..6f2f28feb 100644
--- a/src/Core/Users/UsersServiceProvider.php
+++ b/src/Core/Users/UsersServiceProvider.php
@@ -5,7 +5,6 @@ use Flarum\Events\ModelAllow;
 use Flarum\Events\RegisterUserGambits;
 use Flarum\Events\RegisterUserPreferences;
 use Flarum\Support\ServiceProvider;
-use Flarum\Extend;
 use Illuminate\Contracts\Container\Container;
 
 class UsersServiceProvider extends ServiceProvider
diff --git a/stubs/extension/js/forum/src/main.js b/stubs/extension/js/forum/src/main.js
index d91d90e70..bd6eef44f 100644
--- a/stubs/extension/js/forum/src/main.js
+++ b/stubs/extension/js/forum/src/main.js
@@ -1,6 +1,6 @@
 import { extend } from 'flarum/extend';
 import app from 'flarum/app';
 
-app.initializers.add('{{name}}', function() {
+app.initializers.add('{{name}}', app => {
   // TODO
 });