diff --git a/app/code/Magento/Checkout/Model/GuestPaymentInformationManagement.php b/app/code/Magento/Checkout/Model/GuestPaymentInformationManagement.php
index 333226b7d216f..da29482f0123f 100644
--- a/app/code/Magento/Checkout/Model/GuestPaymentInformationManagement.php
+++ b/app/code/Magento/Checkout/Model/GuestPaymentInformationManagement.php
@@ -14,6 +14,8 @@
 use Magento\Quote\Model\Quote;
 
 /**
+ * Guest payment information management model.
+ *
  * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
  */
 class GuestPaymentInformationManagement implements \Magento\Checkout\Api\GuestPaymentInformationManagementInterface
@@ -66,7 +68,7 @@ class GuestPaymentInformationManagement implements \Magento\Checkout\Api\GuestPa
      * @param \Magento\Checkout\Api\PaymentInformationManagementInterface $paymentInformationManagement
      * @param \Magento\Quote\Model\QuoteIdMaskFactory $quoteIdMaskFactory
      * @param CartRepositoryInterface $cartRepository
-     * @param ResourceConnection|null
+     * @param ResourceConnection $connectionPool
      * @codeCoverageIgnore
      */
     public function __construct(
@@ -88,7 +90,7 @@ public function __construct(
     }
 
     /**
-     * {@inheritDoc}
+     * @inheritdoc
      */
     public function savePaymentInformationAndPlaceOrder(
         $cartId,
@@ -129,7 +131,7 @@ public function savePaymentInformationAndPlaceOrder(
     }
 
     /**
-     * {@inheritDoc}
+     * @inheritdoc
      */
     public function savePaymentInformation(
         $cartId,
@@ -156,7 +158,7 @@ public function savePaymentInformation(
     }
 
     /**
-     * {@inheritDoc}
+     * @inheritdoc
      */
     public function getPaymentInformation($cartId)
     {
@@ -190,9 +192,8 @@ private function limitShippingCarrier(Quote $quote) : void
     {
         $shippingAddress = $quote->getShippingAddress();
         if ($shippingAddress && $shippingAddress->getShippingMethod()) {
-            $shippingDataArray = explode('_', $shippingAddress->getShippingMethod());
-            $shippingCarrier = array_shift($shippingDataArray);
-            $shippingAddress->setLimitCarrier($shippingCarrier);
+            $shippingRate = $shippingAddress->getShippingRateByCode($shippingAddress->getShippingMethod());
+            $shippingAddress->setLimitCarrier($shippingRate->getCarrier());
         }
     }
 }
diff --git a/app/code/Magento/Checkout/Test/Unit/Model/GuestPaymentInformationManagementTest.php b/app/code/Magento/Checkout/Test/Unit/Model/GuestPaymentInformationManagementTest.php
index 853ae0157e64a..1de0ebce10f51 100644
--- a/app/code/Magento/Checkout/Test/Unit/Model/GuestPaymentInformationManagementTest.php
+++ b/app/code/Magento/Checkout/Test/Unit/Model/GuestPaymentInformationManagementTest.php
@@ -273,7 +273,7 @@ public function testSavePaymentInformationAndPlaceOrderWithLocalizedException()
      */
     private function getMockForAssignBillingAddress(
         int $cartId,
-        \PHPUnit_Framework_MockObject_MockObject  $billingAddressMock
+        \PHPUnit_Framework_MockObject_MockObject $billingAddressMock
     ) : void {
         $quoteIdMask = $this->createPartialMock(QuoteIdMask::class, ['getQuoteId', 'load']);
         $this->quoteIdMaskFactoryMock->method('create')
@@ -287,9 +287,11 @@ private function getMockForAssignBillingAddress(
         $billingAddressId = 1;
         $quote = $this->createMock(Quote::class);
         $quoteBillingAddress = $this->createMock(Address::class);
+        $shippingRate = $this->createPartialMock(\Magento\Quote\Model\Quote\Address\Rate::class, []);
+        $shippingRate->setCarrier('flatrate');
         $quoteShippingAddress = $this->createPartialMock(
             Address::class,
-            ['setLimitCarrier', 'getShippingMethod']
+            ['setLimitCarrier', 'getShippingMethod', 'getShippingRateByCode']
         );
         $this->cartRepositoryMock->method('getActive')
             ->with($cartId)
@@ -309,6 +311,9 @@ private function getMockForAssignBillingAddress(
         $quote->expects($this->once())
             ->method('setBillingAddress')
             ->with($billingAddressMock);
+        $quoteShippingAddress->expects($this->any())
+            ->method('getShippingRateByCode')
+            ->willReturn($shippingRate);
         $quote->expects($this->once())
             ->method('setDataChanges')
             ->willReturnSelf();