diff --git a/erpnext/stock/doctype/serial_no/serial_no.py b/erpnext/stock/doctype/serial_no/serial_no.py
index 6bacf1f8a3..c8d8ca9e17 100644
--- a/erpnext/stock/doctype/serial_no/serial_no.py
+++ b/erpnext/stock/doctype/serial_no/serial_no.py
@@ -554,7 +554,7 @@ def auto_fetch_serial_number(qty, item_code, warehouse, posting_date=None, batch
 
 	if batch_nos:
 		try:
-			filters["batch_no"] = json.loads(batch_nos)
+			filters["batch_no"] = json.loads(batch_nos) if (type(json.loads(batch_nos)) == list) else [json.loads(batch_nos)]
 		except:
 			filters["batch_no"] = [batch_nos]
 
@@ -626,4 +626,4 @@ def fetch_serial_numbers(filters, qty, do_not_include=[]):
 				batch_no_condition=batch_no_condition
 			), filters, as_dict=1)
 
-	return serial_numbers
\ No newline at end of file
+	return serial_numbers