diff --git a/addons/account/models/account_invoice.py b/addons/account/models/account_invoice.py
index 4f068187452..db9a8c57c7a 100644
--- a/addons/account/models/account_invoice.py
+++ b/addons/account/models/account_invoice.py
@@ -148,14 +148,17 @@ class AccountInvoice(models.Model):
             info = {'title': _('Less Payment'), 'outstanding': False, 'content': []}
             currency_id = self.currency_id
             for payment in self.payment_move_line_ids:
+                payment_currency_id = False
                 if self.type in ('out_invoice', 'in_refund'):
                     amount = sum([p.amount for p in payment.matched_debit_ids if p.debit_move_id in self.move_id.line_ids])
                     amount_currency = sum([p.amount_currency for p in payment.matched_debit_ids if p.debit_move_id in self.move_id.line_ids])
-                    payment_currency_id = all([p.currency_id == payment.matched_debit_ids[0].currency_id for p in payment.matched_debit_ids]) and payment.matched_debit_ids[0].currency_id or False
+                    if payment.matched_debit_ids:
+                        payment_currency_id = all([p.currency_id == payment.matched_debit_ids[0].currency_id for p in payment.matched_debit_ids]) and payment.matched_debit_ids[0].currency_id or False
                 elif self.type in ('in_invoice', 'out_refund'):
                     amount = sum([p.amount for p in payment.matched_credit_ids if p.credit_move_id in self.move_id.line_ids])
                     amount_currency = sum([p.amount_currency for p in payment.matched_credit_ids if p.credit_move_id in self.move_id.line_ids])
-                    payment_currency_id = all([p.currency_id == payment.matched_credit_ids[0].currency_id for p in payment.matched_credit_ids]) and payment.matched_credit_ids[0].currency_id or False
+                    if payment.matched_credit_ids:
+                        payment_currency_id = all([p.currency_id == payment.matched_credit_ids[0].currency_id for p in payment.matched_credit_ids]) and payment.matched_credit_ids[0].currency_id or False
                 # get the payment value in invoice currency
                 if payment_currency_id and payment_currency_id == self.currency_id:
                     amount_to_show = amount_currency