diff --git a/src/Oro/Bundle/MagentoBundle/Entity/Order.php b/src/Oro/Bundle/MagentoBundle/Entity/Order.php
index 6bdbb1d0913..d2a17cb9693 100644
--- a/src/Oro/Bundle/MagentoBundle/Entity/Order.php
+++ b/src/Oro/Bundle/MagentoBundle/Entity/Order.php
@@ -192,6 +192,7 @@ class Order extends ExtendOrder implements
 
     /**
      * @ORM\ManyToOne(targetEntity="Cart")
+     * @ORM\JoinColumn(onDelete="CASCADE")
      */
     protected $cart;
 
diff --git a/src/Oro/Bundle/MagentoBundle/Migrations/Schema/OroMagentoBundleInstaller.php b/src/Oro/Bundle/MagentoBundle/Migrations/Schema/OroMagentoBundleInstaller.php
index 38c70bc04ef..2b555e35ea0 100644
--- a/src/Oro/Bundle/MagentoBundle/Migrations/Schema/OroMagentoBundleInstaller.php
+++ b/src/Oro/Bundle/MagentoBundle/Migrations/Schema/OroMagentoBundleInstaller.php
@@ -72,7 +72,7 @@ public function setExtendExtension(ExtendExtension $extendExtension)
      */
     public function getMigrationVersion()
     {
-        return 'v1_45';
+        return 'v1_46';
     }
 
     /**
@@ -864,7 +864,7 @@ protected function addOrocrmMagentoOrderForeignKeys(Schema $schema)
             $schema->getTable('orocrm_magento_cart'),
             ['cart_id'],
             ['id'],
-            []
+            ['onDelete' => 'CASCADE']
         );
         $table->addForeignKeyConstraint(
             $schema->getTable('oro_user'),
diff --git a/src/Oro/Bundle/MagentoBundle/Migrations/Schema/v1_46/SetCascadeDeleteToOrderCartFK.php b/src/Oro/Bundle/MagentoBundle/Migrations/Schema/v1_46/SetCascadeDeleteToOrderCartFK.php
new file mode 100644
index 00000000000..53ed059b3c6
--- /dev/null
+++ b/src/Oro/Bundle/MagentoBundle/Migrations/Schema/v1_46/SetCascadeDeleteToOrderCartFK.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace Oro\Bundle\MagentoBundle\Migrations\Schema\v1_46;
+
+use Doctrine\DBAL\Schema\Schema;
+
+use Oro\Bundle\MigrationBundle\Migration\Migration;
+use Oro\Bundle\MigrationBundle\Migration\QueryBag;
+
+class SetCascadeDeleteToOrderCartFK implements Migration
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function up(Schema $schema, QueryBag $queries)
+    {
+        $table  = $schema->getTable('orocrm_magento_order');
+        $fkName = 'FK_4D09F3051AD5CDBF';
+        $fk     = $table->getForeignKey($fkName);
+        if ($fk->getOption('onDelete') !== 'CASCADE') {
+            $table->removeForeignKey($fkName);
+            $table->addForeignKeyConstraint(
+                $schema->getTable('orocrm_magento_cart'),
+                ['cart_id'],
+                ['id'],
+                ['onDelete' => 'CASCADE']
+            );
+        }
+    }
+}