diff --git a/app/Mail/Won/PrizeWonAdminMail.php b/app/Mail/Won/PrizeWonAdminMail.php
index daab5cc..66474f1 100644
--- a/app/Mail/Won/PrizeWonAdminMail.php
+++ b/app/Mail/Won/PrizeWonAdminMail.php
@@ -35,7 +35,7 @@ class PrizeWonAdminMail extends Mailable implements ShouldQueue
         protected string $prize_label,
         protected Customer $customer,
         protected string $unique_code,
-        protected string $ean_code
+        protected string|null $ean_code
     ) {
     }