diff --git a/controllers/ImportController.go b/controllers/ImportController.go
index e7c71ac..0acda64 100644
--- a/controllers/ImportController.go
+++ b/controllers/ImportController.go
@@ -358,7 +358,7 @@ func ImportProduct(product models.Product, db *gorm.DB) error {
 						sizeVariant.ItemNumber = index
 					}
 
-					sku := fmt.Sprintf("%s-%s-%d-col-size", colorVariant.ProductGroupID, colorVariant.ProductNumber, sizeVariant.ItemNumber)
+					sku := fmt.Sprintf("%s-%s-%d-%d", colorVariant.ProductGroupID, colorVariant.ProductNumber, sizeVariant.ItemNumber, index)
 
 					productVariant := gm.Product{
 						ParentID:          mainProductFlat.ProductID,