diff --git a/src/Model/Entity/ProductSku.php b/src/Model/Entity/ProductSku.php
index 444c48b..eb2287c 100644
--- a/src/Model/Entity/ProductSku.php
+++ b/src/Model/Entity/ProductSku.php
@@ -18,6 +18,7 @@ use Cake\ORM\Entity;
  * @property DateTime $created
  * @property DateTime|null $modified
  * @property DateTime|null $deleted
+ * @property bool $default_sku
  *
  * @property Product $product
  * @property ProductSkuVariantValue[] $product_sku_variant_values
@@ -42,6 +43,7 @@ class ProductSku extends Entity
         'created' => true,
         'modified' => true,
         'deleted' => true,
+        'default_sku' => true,
 
         // entities
         'product' => false,