diff --git a/addons/product/models/product_attribute.py b/addons/product/models/product_attribute.py
index 20465d47c49..9c9a8c09388 100644
--- a/addons/product/models/product_attribute.py
+++ b/addons/product/models/product_attribute.py
@@ -76,7 +76,7 @@ class ProductAttributevalue(models.Model):
 
     @api.multi
     def _variant_name(self, variable_attributes):
-        return ", ".join([v.name for v in self.sorted(key=lambda r: r.attribute_id.name) if v.attribute_id in variable_attributes])
+        return ", ".join([v.name for v in self if v.attribute_id in variable_attributes])
 
 
 class ProductAttributePrice(models.Model):