diff -u b/modules/payment/src/Controller/PaymentCheckoutController.php b/modules/payment/src/Controller/PaymentCheckoutController.php
--- b/modules/payment/src/Controller/PaymentCheckoutController.php
+++ b/modules/payment/src/Controller/PaymentCheckoutController.php
@@ -113,7 +113,7 @@
           'payment_gateway_mode' => $payment_gateway_plugin->getMode(),
         ]);
         // In case payment gateway supports payment method.
-        $payment_method = $payment_gateway_plugin->createPaymentMethod($payment_method, $order, $request);
+        $payment_gateway_plugin->createPaymentMethod($payment_method, $order, $request);
 
         // Add payment method to the order.
         $order->set('payment_method', $payment_method);