diff --git a/extend.php b/extend.php
index ee87fda..2c51aad 100644
--- a/extend.php
+++ b/extend.php
@@ -23,14 +23,14 @@
 
 return [
     (new Extend\Frontend('forum'))
-        ->js(__DIR__ . '/js/dist/forum.js')
-        ->css(__DIR__ . '/resources/less/forum.less'),
+        ->js(__DIR__.'/js/dist/forum.js')
+        ->css(__DIR__.'/resources/less/forum.less'),
 
     (new Extend\Frontend('admin'))
-        ->js(__DIR__ . '/js/dist/admin.js')
-        ->css(__DIR__ . '/resources/less/admin.less'),
+        ->js(__DIR__.'/js/dist/admin.js')
+        ->css(__DIR__.'/resources/less/admin.less'),
 
-    new Extend\Locales(__DIR__ . '/resources/locale'),
+    new Extend\Locales(__DIR__.'/resources/locale'),
 
     (new Extend\Settings())
         ->default('fof-recaptcha.signup', true)
diff --git a/src/ForumAttributes.php b/src/ForumAttributes.php
index 7a0ecf3..ff56cd0 100644
--- a/src/ForumAttributes.php
+++ b/src/ForumAttributes.php
@@ -21,7 +21,7 @@ class ForumAttributes
      */
     protected $settings;
 
-    function __construct(SettingsRepositoryInterface $settings)
+    public function __construct(SettingsRepositoryInterface $settings)
     {
         $this->settings = $settings;
     }
diff --git a/src/Listeners/AddValidatorRule.php b/src/Listeners/AddValidatorRule.php
index 7374f61..82c8f10 100644
--- a/src/Listeners/AddValidatorRule.php
+++ b/src/Listeners/AddValidatorRule.php
@@ -55,7 +55,7 @@ function ($attribute, $value, $parameters) use ($validator, $secret) {
                 if (!empty($verification->getErrorCodes())) {
                     $validator->setCustomMessages(
                         [
-                            'recaptcha' => resolve('translator')->trans('validation.recaptcha-unknown', ['errors' => implode(', ', $verification->getErrorCodes())])
+                            'recaptcha' => resolve('translator')->trans('validation.recaptcha-unknown', ['errors' => implode(', ', $verification->getErrorCodes())]),
                         ]
                     );
                 }
diff --git a/src/Utils.php b/src/Utils.php
index 33ef6a9..305282c 100644
--- a/src/Utils.php
+++ b/src/Utils.php
@@ -1,13 +1,22 @@
 <?php
 
+/*
+ * This file is part of fof/recaptcha.
+ *
+ * Copyright (c) FriendsOfFlarum.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace FoF\ReCaptcha;
 
 use Flarum\Settings\SettingsRepositoryInterface;
 
 class Utils
 {
-    static function isExtensionSetup(SettingsRepositoryInterface $settings): bool
+    public static function isExtensionSetup(SettingsRepositoryInterface $settings): bool
     {
-        return $settings->get('fof-recaptcha.credentials.site', "") !== "" && $settings->get('fof-recaptcha.credentials.secret', "") !== "";
+        return $settings->get('fof-recaptcha.credentials.site', '') !== '' && $settings->get('fof-recaptcha.credentials.secret', '') !== '';
     }
 }