diff --git a/addons/purchase/models/stock.py b/addons/purchase/models/stock.py
index e3e66104591..4f10e405165 100644
--- a/addons/purchase/models/stock.py
+++ b/addons/purchase/models/stock.py
@@ -25,10 +25,10 @@ class StockPicking(models.Model):
         res = super(StockPicking, self)._create_backorder(backorder_moves)
         for picking in self:
             if picking.picking_type_id.code == 'incoming':
-                backorder = self.search([('backorder_id', '=', picking.id)])
-                backorder.message_post_with_view('mail.message_origin_link',
-                    values={'self': backorder, 'origin': backorder.purchase_id},
-                    subtype_id=self.env.ref('mail.mt_note').id)
+                for backorder in self.search([('backorder_id', '=', picking.id)]):
+                    backorder.message_post_with_view('mail.message_origin_link',
+                        values={'self': backorder, 'origin': backorder.purchase_id},
+                        subtype_id=self.env.ref('mail.mt_note').id)
         return res