diff --git a/erpnext/patches/v11_0/update_department_lft_rgt.py b/erpnext/patches/v11_0/update_department_lft_rgt.py
index 5a8837e..b2f407b 100644
--- a/erpnext/patches/v11_0/update_department_lft_rgt.py
+++ b/erpnext/patches/v11_0/update_department_lft_rgt.py
@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 import frappe
 from frappe import _
 from frappe.utils.nestedset import rebuild_tree