diff --git a/erpnext/stock/doctype/pick_list/pick_list.py b/erpnext/stock/doctype/pick_list/pick_list.py
index 86f24c2..b2eaecb 100644
--- a/erpnext/stock/doctype/pick_list/pick_list.py
+++ b/erpnext/stock/doctype/pick_list/pick_list.py
@@ -9,7 +9,6 @@
 from frappe.model.document import Document
 from frappe.model.mapper import map_child_doc
 from frappe.utils import cint, floor, flt, today
-from six import iteritems
 
 from erpnext.selling.doctype.sales_order.sales_order import (
 	make_delivery_note as create_delivery_note_from_sales_order,
@@ -246,7 +245,7 @@
 		warehouse_serial_nos_map.setdefault(warehouse, []).append(serial_no)
 
 	locations = []
-	for warehouse, serial_nos in iteritems(warehouse_serial_nos_map):
+	for warehouse, serial_nos in warehouse_serial_nos_map.items():
 		locations.append({
 			'qty': len(serial_nos),
 			'warehouse': warehouse,