diff --git a/erpnext/controllers/stock_controller.py b/erpnext/controllers/stock_controller.py
index d13edc34573..c6d0c7c0a6e 100644
--- a/erpnext/controllers/stock_controller.py
+++ b/erpnext/controllers/stock_controller.py
@@ -239,7 +239,7 @@ class StockController(AccountsController):
 		for d in self.items:
 			if not d.batch_no: continue
 
-			serial_nos = [d.name for d in frappe.get_all("Serial No", {'batch_no': d.batch_no})]
+			serial_nos = [sr.name for sr in frappe.get_all("Serial No", {'batch_no': d.batch_no})]
 			if serial_nos:
 				frappe.db.set_value("Serial No", { 'name': ['in', serial_nos] }, "batch_no", None)