diff --git a/src/Controller/ProductSkusController.php b/src/Controller/ProductSkusController.php
index e862198..96233a4 100644
--- a/src/Controller/ProductSkusController.php
+++ b/src/Controller/ProductSkusController.php
@@ -131,6 +131,7 @@ class ProductSkusController extends AppController
                     'created',
                     'modified',
                     'enabled',
+                    'default_sku',
                 ],
                 'associated' => [
                     'ProductSkuVariantValues' => [