diff --git a/modules/commerce/migrations/commerce1_order_item_type.yml b/modules/commerce/migrations/commerce1_order_item_type.yml
index 8f7a83d..7e4748b 100644
--- a/modules/commerce/migrations/commerce1_order_item_type.yml
+++ b/modules/commerce/migrations/commerce1_order_item_type.yml
@@ -11,7 +11,7 @@ process:
     -
       plugin: static_map
       source: type
-      bypass: TRUE
+      bypass: true
       map:
         shipping: false
     -
diff --git a/modules/commerce/src/Plugin/migrate/process/commerce1/OrderItemAdjustment.php b/modules/commerce/src/Plugin/migrate/process/commerce1/OrderItemAdjustment.php
index d7bb75e..018fc86 100644
--- a/modules/commerce/src/Plugin/migrate/process/commerce1/OrderItemAdjustment.php
+++ b/modules/commerce/src/Plugin/migrate/process/commerce1/OrderItemAdjustment.php
@@ -3,7 +3,6 @@
 namespace Drupal\commerce_migrate_commerce\Plugin\migrate\process\commerce1;
 
 use Drupal\migrate\MigrateExecutableInterface;
-use Drupal\migrate\ProcessPluginBase;
 use Drupal\migrate\Row;
 
 /**
@@ -13,7 +12,7 @@ use Drupal\migrate\Row;
  *   id = "commerce1_order_item_adjustment"
  * )
  */
-class OrderItemAdjustment extends ProcessPluginBase {
+class OrderItemAdjustment extends CommercePrice {
 
   /**
    * {@inheritdoc}
@@ -39,8 +38,8 @@ class OrderItemAdjustment extends ProcessPluginBase {
               'fraction_digits' => $fraction_digits,
               'currency_code' => $currency_code,
             ];
-            $price = new CommercePrice([], 'price', '');
-            $price_scaled = $price->transform($input, $migrate_executable, $row, NULL);
+
+            $price_scaled = parent::transform($input, $migrate_executable, $row, NULL);
 
             $type = 'promotion';
             $label = $value['price']['data']['discount_component_title'];