diff --git a/erpnext/stock/doctype/warehouse/warehouse.py b/erpnext/stock/doctype/warehouse/warehouse.py
index eb4867d..cd86be3 100644
--- a/erpnext/stock/doctype/warehouse/warehouse.py
+++ b/erpnext/stock/doctype/warehouse/warehouse.py
@@ -177,7 +177,7 @@
 	return frappe.get_doc("Warehouse", args.docname).convert_to_group_or_ledger()
 
 def get_child_warehouses(warehouse):
-	lft, rgt = frappe.get_cached_value("Warehouse", warehouse, [lft, rgt])
+	lft, rgt = frappe.get_cached_value("Warehouse", warehouse, ["lft", "rgt"])
 
 	return frappe.db.sql_list("""select name from `tabWarehouse`
 		where lft >= %s and rgt <= %s""", (lft, rgt))