diff --git a/src/Webpay/WebpayPlus/Responses/TransactionDetail.php b/src/Webpay/WebpayPlus/Responses/TransactionDetail.php
index c2c0d0c8..4a24896e 100644
--- a/src/Webpay/WebpayPlus/Responses/TransactionDetail.php
+++ b/src/Webpay/WebpayPlus/Responses/TransactionDetail.php
@@ -106,7 +106,7 @@ public function getInstallmentsNumber(): int|null
     }
 
     /**
-     * @return int|null
+     * @return string|null
      */
     public function getCommerceCode(): string|null
     {