Fixed minor issue
diff --git a/erpnext/accounts/utils.py b/erpnext/accounts/utils.py
index c53f2a6..8cf1f51 100644
--- a/erpnext/accounts/utils.py
+++ b/erpnext/accounts/utils.py
@@ -610,7 +610,7 @@
 				or (voucher_type not in ('Journal Entry', 'Payment Entry')))
 		group by voucher_type, voucher_no
 		having (invoice_amount - payment_amount) > 0.005
-		order by posting_date, name, due_date""".format(
+		order by posting_date, name""".format(
 			dr_or_cr=dr_or_cr,
 			invoice = invoice,
 			payment_dr_or_cr=payment_dr_or_cr,