diff --git a/erpnext/stock/doctype/serial_no/serial_no.py b/erpnext/stock/doctype/serial_no/serial_no.py
index 90d5c3201e6..9dfd12acc2c 100644
--- a/erpnext/stock/doctype/serial_no/serial_no.py
+++ b/erpnext/stock/doctype/serial_no/serial_no.py
@@ -209,7 +209,7 @@ class SerialNo(StockController):
 					OR serial_no like %s
 				)
 			ORDER BY
-				posting_date desc, posting_time desc, creation desc""",
+				posting_datetime desc, creation desc""",
 			(
 				self.item_code,
 				self.company,