diff --git a/addons/account/models/account_move.py b/addons/account/models/account_move.py
index da616cc63b7..522ea243542 100644
--- a/addons/account/models/account_move.py
+++ b/addons/account/models/account_move.py
@@ -489,6 +489,10 @@ class AccountMoveLine(models.Model):
         for line in self.move_id.resolve_2many_commands(
                 'line_ids', self._context['line_ids'], fields=['credit', 'debit']):
             balance += line.get('debit', 0) - line.get('credit', 0)
+        # if we are here, line_ids is in context, so journal_id should also be.
+        currency = self._context.get('journal_id') and self.browse(self._context['journal_id']).company_id.currency_id
+        if currency:
+            balance = currency.round(balance)
         if balance < 0:
             rec.update({'debit': -balance})
         if balance > 0: