diff --git a/app/Domains/Chat/MetaDataDto.php b/app/Domains/Chat/MetaDataDto.php
index 854eac58..69c2a327 100644
--- a/app/Domains/Chat/MetaDataDto.php
+++ b/app/Domains/Chat/MetaDataDto.php
@@ -6,7 +6,6 @@
 
 class MetaDataDto extends Data
 {
-
     public function __construct(
         public mixed $persona = '',
         public mixed $filter = '',
diff --git a/app/Models/Chat.php b/app/Models/Chat.php
index 6498ae08..0640a973 100644
--- a/app/Models/Chat.php
+++ b/app/Models/Chat.php
@@ -87,9 +87,9 @@ public function addInput(string $message,
         RoleEnum $role = RoleEnum::User,
         ?string $systemPrompt = null,
         bool $show_in_thread = true,
-        MetaDataDto $meta_data = null): Message
+        ?MetaDataDto $meta_data = null): Message
     {
-        if(! $meta_data) {
+        if (! $meta_data) {
             $meta_data = MetaDataDto::from([]);
         }