diff --git a/src/Resources/config/doctrine/Refund.orm.xml b/src/Resources/config/doctrine/Refund.orm.xml
index 608f6c7f..25da7280 100644
--- a/src/Resources/config/doctrine/Refund.orm.xml
+++ b/src/Resources/config/doctrine/Refund.orm.xml
@@ -11,7 +11,7 @@
             <generator strategy="AUTO" />
         </id>
 
-        <field name="orderNumber"/>
+        <field name="orderNumber" column="order_number" />
         <field name="amount" type="integer" />
         <field name="refundedUnitId" type="integer" nullable="true" column="refunded_unit_id"/>
         <field name="type" type="sylius_refund_refund_type" />