diff --git a/app/Models/MailContactData.php b/app/Models/MailContactData.php
index ab2be805..9906e937 100644
--- a/app/Models/MailContactData.php
+++ b/app/Models/MailContactData.php
@@ -101,11 +101,11 @@ class MailContactData extends Model
         'consumptionDateYear'  => '0000',
     ];
 
-    public function __construct(array $attributes = [], string $filePath = '')
+    public function __construct(array $attributes = [], string|null $filePath = '')
     {
         parent::__construct($attributes);
 
-        $this->joinFile = self::getFileName($filePath);
+        $this->joinFile = self::getFileName($filePath ?? '');
     }
 
     /**