diff --git a/addons/account/account_invoice.py b/addons/account/account_invoice.py
index 7fc83b4e42a..1cd11d9fb11 100644
--- a/addons/account/account_invoice.py
+++ b/addons/account/account_invoice.py
@@ -744,6 +744,7 @@ class account_invoice(models.Model):
             else:
                 line['currency_id'] = False
                 line['amount_currency'] = False
+                line['price'] = self.currency_id.round(line['price'])
             line['ref'] = ref
             if self.type in ('out_invoice','in_refund'):
                 total += line['price']