diff --git a/custom_addons/sale_picking_validate/models/sale_picking_validate.py b/custom_addons/sale_picking_validate/models/sale_picking_validate.py
index 16f8c33d8..ace702d99 100644
--- a/custom_addons/sale_picking_validate/models/sale_picking_validate.py
+++ b/custom_addons/sale_picking_validate/models/sale_picking_validate.py
@@ -28,8 +28,8 @@ class SaleOrder(models.Model):
                         order._create_invoices()
                     else:
                         raise ValidationError(_('Some products are not Available'))
-    def _create_invoices(self):
-        res = super(SaleOrder, self)._create_invoices()
+    def _create_invoices(self,final=True):
+        res = super(SaleOrder, self)._create_invoices(final)
         if res and not self.invoice_no:
             raise ValidationError(_('Please add Invoice No'))
         if res and not self.invoice_date: