diff --git a/product/ERP5Banking/tests/TestERP5BankingMixin.py b/product/ERP5Banking/tests/TestERP5BankingMixin.py
index a14bb8b6a75f99bf58e942eb49c3507466743f8d..b2f964dc065b05a441ece5d2d497c16eef67be93 100644
--- a/product/ERP5Banking/tests/TestERP5BankingMixin.py
+++ b/product/ERP5Banking/tests/TestERP5BankingMixin.py
@@ -568,7 +568,7 @@ class TestERP5BankingMixin:
     if not self.portal.hasProperty('reference_currency_id'):
       self.portal.manage_addProperty('reference_currency_id', 'EUR', type='string')
     else:
-      self.portal.edit(reference_currency_id="EUR")
+      self.portal._updateProperty('reference_currency_id', "EUR")
     # the person module
     self.person_module = self.getPersonModule()
     # the organisation module