diff --git a/erpnext/demo/user/sales.py b/erpnext/demo/user/sales.py
index 666e201..ddd36ef 100644
--- a/erpnext/demo/user/sales.py
+++ b/erpnext/demo/user/sales.py
@@ -118,8 +118,7 @@
 		from erpnext.selling.doctype.quotation.quotation import make_sales_order
 		so = frappe.get_doc(make_sales_order(q))
 		so.transaction_date = frappe.flags.current_date
-		for d in so.get("items"):
-			d.delivery_date = frappe.utils.add_days(frappe.flags.current_date, 10)
+		so.delivery_date = frappe.utils.add_days(frappe.flags.current_date, 10)
 		so.insert()
 		frappe.db.commit()
 		so.submit()