diff --git a/ext/custom-addons/dp_custom/models/sale.py b/ext/custom-addons/dp_custom/models/sale.py
index 1e139348..9ad12396 100644
--- a/ext/custom-addons/dp_custom/models/sale.py
+++ b/ext/custom-addons/dp_custom/models/sale.py
@@ -285,7 +285,7 @@ class SaleOrder(models.Model):
     def _get_specified_fields(self):
         return ['origin', 'client_order_ref', 'note', 'date_order', 'assembled', 'line_id', 'partner_id',
                 'fiscal_position_id', 'user_id', 'payment_term_id', 'partner_delivery_id', 'partner_invoice_id',
-                'assembly_state', 'confirmation_nr', 'confirm_order', 'order_type']
+                'assembly_state', 'confirmation_nr', 'confirm_order', 'order_type', 'internal_notes']
 
     @api.multi
     def write(self, vals):