diff --git a/livestyled/schemas/product.py b/livestyled/schemas/product.py
index aa87176..2cc6e10 100644
--- a/livestyled/schemas/product.py
+++ b/livestyled/schemas/product.py
@@ -37,7 +37,7 @@ class Meta:
     id = fields.Int()
     price = fields.Integer()
     stocks = RelatedResourceField(schema='livestyled.schemas.product.ProductVariantStockSchema', many=True,
-                                  microservice_aware=True)
+                                  microservice_aware=True, missing=None)
     product = RelatedResourceLinkField(schema='livestyled.schemas.product.ProductSchema', microservice_aware=True)
     external_id = fields.String(missing=None, data_key='externalId')
     translations = fields.Nested(ProductVariantTranslationSchema, many=True, missing=None)