diff --git a/src/Util/Helper.php b/src/Util/Helper.php
index 98f9c7e..c00bfa3 100644
--- a/src/Util/Helper.php
+++ b/src/Util/Helper.php
@@ -45,6 +45,8 @@ public static function getFields(): array
             'TPAY_BLIK_ACTIVE',
             'TPAY_BLIK_WIDGET',
             'TPAY_TRANSFER_WIDGET',
+            'TPAY_CUSTOM_ORDER[]',
+            'TPAY_CUSTOM_ORDER',
             'TPAY_CARD_WIDGET',
             'TPAY_INSTALLMENTS_ACTIVE',
             'TPAY_PEKAO_INSTALLMENTS_ACTIVE',