diff --git a/ext/odoo/addons/base_vat_autocomplete/models/res_partner.py b/ext/odoo/addons/base_vat_autocomplete/models/res_partner.py
index 93d74c49..25eb1639 100644
--- a/ext/odoo/addons/base_vat_autocomplete/models/res_partner.py
+++ b/ext/odoo/addons/base_vat_autocomplete/models/res_partner.py
@@ -49,7 +49,7 @@ class ResPartner(models.Model):
             non_set_address_fields = set(['street', 'street2', 'city', 'zip', 'state_id', 'country_id'])
             if not partner.vat:
                 return {}
-            if len(partner.vat) > 5 and partner.vat[:2].lower() in stdnum_vat.country_codes:
+            if len(partner.vat) > 5 and partner.vat[:2].lower() in stdnum_vat._country_codes:
                 # Equivalent to stdnum_vat.check_vies(partner.vat).
                 # However, we want to add a custom timeout to the suds.client
                 # because by default, it's 120 seconds and this is to long.