Minor fix in old patch
diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index 3a18efc..dbd098d 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -345,7 +345,7 @@
erpnext.patches.v7_1.set_prefered_contact_email
execute:frappe.reload_doc('accounts', 'doctype', 'accounts_settings')
execute:frappe.db.set_value("Accounts Settings", "Accounts Settings", "unlink_payment_on_cancellation_of_invoice", 0)
-execute:frappe.db.sql("update `tabStock Entry` set total_amount = null where purpose in('Repack', 'Manufacture')")
+execute:frappe.db.sql("update `tabStock Entry` set total_amount = 0 where purpose in('Repack', 'Manufacture')")
erpnext.patches.v7_1.save_stock_settings
erpnext.patches.v7_0.repost_gle_for_pi_with_update_stock #2016-11-01
erpnext.patches.v7_1.add_account_user_role_for_timesheet