diff --git a/addons/l10n_ar/models/account_move.py b/addons/l10n_ar/models/account_move.py
index ad0c70e8c4a..1f1eca4b49b 100644
--- a/addons/l10n_ar/models/account_move.py
+++ b/addons/l10n_ar/models/account_move.py
@@ -163,8 +163,12 @@ class AccountMove(models.Model):
             if rec.company_id.currency_id == rec.currency_id:
                 rec.l10n_ar_currency_rate = 1.0
             elif not rec.l10n_ar_currency_rate:
-                rec.l10n_ar_currency_rate = rec.currency_id._convert(
-                    1.0, rec.company_id.currency_id, rec.company_id, rec.date, round=False)
+                rec.l10n_ar_currency_rate = self.env['res.currency']._get_conversion_rate(
+                    from_currency=rec.currency_id,
+                    to_currency=rec.company_id.currency_id,
+                    company=rec.company_id,
+                    date=rec.invoice_date,
+                )
 
     @api.onchange('partner_id')
     def _onchange_afip_responsibility(self):