diff --git a/controllers/ImportController.go b/controllers/ImportController.go
index 0acda64..6b1795f 100644
--- a/controllers/ImportController.go
+++ b/controllers/ImportController.go
@@ -538,7 +538,7 @@ func ImportProduct(product models.Product, db *gorm.DB) error {
 				sizeVariant.ItemNumber = index
 			}
 
-			sku := fmt.Sprintf("%s-%s-%d-size", iproduct.Sku, product.ProductNumber, sizeVariant.ItemNumber)
+			sku := fmt.Sprintf("%s-%s-%d-%d", iproduct.Sku, product.ProductNumber, sizeVariant.ItemNumber, index)
 			sizeOption := gm.GetAttributeOption(tx, AttributesMap["size"].ID, sizeVariant.AttributeValue)
 
 			attributes := []gm.ProductAttributeValue{