diff --git a/yuthon_purchase/models/purchase_workflow.py b/yuthon_purchase/models/purchase_workflow.py
index 26b753cc6..9fd02b0e0 100644
--- a/yuthon_purchase/models/purchase_workflow.py
+++ b/yuthon_purchase/models/purchase_workflow.py
@@ -147,6 +147,8 @@ class PurchaseFixedLine(models.Model):
     @api.onchange('product_id')
     def _onchange_product_id(self):
         if self.product_id:
+            self.brand = self.product_id.brand
+            self.specs = self.product_id.specs
             self.name = self.product_id.display_name
             self.unit_id = self.product_id.uom_id
             self.price_unit = self.product_id.standard_price