diff --git a/app/code/Magento/Quote/Model/Quote/Item/Updater.php b/app/code/Magento/Quote/Model/Quote/Item/Updater.php
index 6a7a3c1c1839e..05244d4ecc43a 100644
--- a/app/code/Magento/Quote/Model/Quote/Item/Updater.php
+++ b/app/code/Magento/Quote/Model/Quote/Item/Updater.php
@@ -145,8 +145,8 @@ protected function unsetCustomPrice(Item $item)
             $item->addOption($infoBuyRequest);
         }
 
-        $item->unsetData('custom_price');
-        $item->unsetData('original_custom_price');
+        $item->setData('custom_price', null);
+        $item->setData('original_custom_price', null);
     }
 
     /**