diff --git a/addons/point_of_sale/models/pos_order.py b/addons/point_of_sale/models/pos_order.py
index 42a304f9d76..9c45e5aa64a 100644
--- a/addons/point_of_sale/models/pos_order.py
+++ b/addons/point_of_sale/models/pos_order.py
@@ -647,7 +647,6 @@ class PosOrderLine(models.Model):
             values['name'] = self.env['ir.sequence'].next_by_code('pos.order.line')
         return super(PosOrderLine, self).create(values)
 
-    @api.model
     def write(self, values):
         if values.get('pack_lot_line_ids'):
             for pl in values.get('pack_lot_ids'):