diff --git a/erpnext/stock/doctype/delivery_note/delivery_note.py b/erpnext/stock/doctype/delivery_note/delivery_note.py
index d8459e6fca6..c82334e318a 100644
--- a/erpnext/stock/doctype/delivery_note/delivery_note.py
+++ b/erpnext/stock/doctype/delivery_note/delivery_note.py
@@ -1023,7 +1023,6 @@ def make_sales_invoice(source_name, target_doc=None, args=None):
 					"parent": "delivery_note",
 					"so_detail": "so_detail",
 					"against_sales_order": "sales_order",
-					"serial_no": "serial_no",
 					"cost_center": "cost_center",
 				},
 				"postprocess": update_item,