diff --git a/erpnext/controllers/stock_controller.py b/erpnext/controllers/stock_controller.py
index dfb53c7..08d422d 100644
--- a/erpnext/controllers/stock_controller.py
+++ b/erpnext/controllers/stock_controller.py
@@ -85,7 +85,7 @@
 				# strip preceeding and succeeding spaces for each SN
 				# (SN could have valid spaces in between e.g. SN - 123 - 2021)
 				serial_no_list = row.serial_no.split("\n")
-				serial_no_list = [sn.lstrip().rstrip() for sn in serial_no_list]
+				serial_no_list = [sn.strip() for sn in serial_no_list]
 
 				row.serial_no = "\n".join(serial_no_list)