diff --git a/config/response.php b/config/response.php
index 3e57bea..61ff491 100644
--- a/config/response.php
+++ b/config/response.php
@@ -16,7 +16,7 @@
 
     'format' => [
         'paginated_resource' => [
-            'data_field' => 'data'
+            'data_field' => 'data',
         ],
     ],
 ];
diff --git a/src/Support/Serializers/ArraySerializer.php b/src/Support/Serializers/ArraySerializer.php
index 32c950d..cfb45a7 100644
--- a/src/Support/Serializers/ArraySerializer.php
+++ b/src/Support/Serializers/ArraySerializer.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Jiannei/laravel-response.
+ *
+ * (c) Jiannei <longjian.huang@foxmail.com>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
 namespace Jiannei\Response\Laravel\Support\Serializers;
 
 use Illuminate\Support\Facades\Config;