diff -u b/migration_templates/d6_ubercart_store.yml b/migration_templates/d6_ubercart_store.yml
--- b/migration_templates/d6_ubercart_store.yml
+++ b/migration_templates/d6_ubercart_store.yml
@@ -35,7 +35,6 @@
     -
       plugin: migration_lookup
       migration: d6_user
-
   default_currency: uc_currency_code
   mail: uc_store_email
   # Country code is required. If is it null none of the address fields are saved.
diff -u b/migration_templates/d7_ubercart_store.yml b/migration_templates/d7_ubercart_store.yml
--- b/migration_templates/d7_ubercart_store.yml
+++ b/migration_templates/d7_ubercart_store.yml
@@ -28,6 +28,13 @@
   # Bundle
   type: 'constants/type'
   name: uc_store_name
+  uid:
+    -
+      plugin: default_value
+      default_value: 1
+    -
+      plugin: migration_lookup
+      migration: d6_user
   default_currency: uc_currency_code
   mail: uc_store_email
   # Country code is required. If is it null none of the address fields are saved.
diff -u b/tests/src/Kernel/d6/Ubercart/StoreTest.php b/tests/src/Kernel/d6/Ubercart/StoreTest.php
--- b/tests/src/Kernel/d6/Ubercart/StoreTest.php
+++ b/tests/src/Kernel/d6/Ubercart/StoreTest.php
@@ -6,7 +6,7 @@
 use Drupal\commerce_store\Entity\Store;
 
 /**
- * Tests billing profile migration.
+ * Tests store migration.
  *
  * @group commerce_migrate
  */
diff -u b/tests/src/Kernel/d7/Ubercart/StoreTest.php b/tests/src/Kernel/d7/Ubercart/StoreTest.php
--- b/tests/src/Kernel/d7/Ubercart/StoreTest.php
+++ b/tests/src/Kernel/d7/Ubercart/StoreTest.php
@@ -6,7 +6,7 @@
 use Drupal\commerce_store\Entity\Store;
 
 /**
- * Tests billing profile migration.
+ * Tests store migration.
  *
  * @group commerce_migrate
  */
@@ -46,6 +46,7 @@
     $this->assertSame('quark@example.com', $store->getEmail());
     $this->assertSame('USD', $store->getDefaultCurrencyCode());
     $this->assertSame('online', $store->bundle());
+    $this->assertSame('1', $store->getOwnerId());
 
     $address = $store->getAddress();
     $this->assertInstanceOf(AddressItem::class, $address);