diff --git a/erpnext/utilities/repost_stock.py b/erpnext/utilities/repost_stock.py
index 4205893..159825a 100644
--- a/erpnext/utilities/repost_stock.py
+++ b/erpnext/utilities/repost_stock.py
@@ -191,7 +191,7 @@
 			"posting_time": posting_time
 		})
 
-def reset_serial_no_status_and_warehouse(serial_nos=[]):
+def reset_serial_no_status_and_warehouse(serial_nos=None):
 	if not serial_nos:
 		serial_nos = frappe.db.sql_list("""select name from `tabSerial No` where status != 'Not in Use'
 			and docstatus = 0""")