diff --git a/base_vat_optional_vies/models/res_partner.py b/base_vat_optional_vies/models/res_partner.py
index 20693cffd9e..ac705dc006f 100644
--- a/base_vat_optional_vies/models/res_partner.py
+++ b/base_vat_optional_vies/models/res_partner.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
-# License AGPL-3: Tecnativa S.L. - Antonio Espinosa
-# See README.rst file on addon root folder for more details
+# Copyright 2015 Tecnativa - Antonio Espinosa
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
 import logging
 import re
@@ -38,12 +38,6 @@ def check_vat(self):
                 if not partner.validate_vat():
                     raise UserError(partner._construct_constraint_msg())
 
-    @api.multi
-    def button_check_vat(self):
-        if not self.validate_vat():
-            raise UserError(self._construct_constraint_msg())
-        return True
-
     def _split_vat(self, vat, country=False):
         """
         @summary: Split Partner vat into country_code and number
diff --git a/base_vat_optional_vies/tests/test_res_partner.py b/base_vat_optional_vies/tests/test_res_partner.py
index 55fb07bd172..2f025d81567 100644
--- a/base_vat_optional_vies/tests/test_res_partner.py
+++ b/base_vat_optional_vies/tests/test_res_partner.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2015 Tecnativa - Antonio Espinosa
 # Copyright 2016 Tecnativa - Sergio Teruel
+# Copyright 2016 Tecnativa - David Vidal
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
 from odoo.tests.common import TransactionCase
@@ -50,10 +51,20 @@ def _test_validate_vat(self, cases):
     #         ('de222070543', 'DE222070543', True),
     #         # Valid VATs don't signed up in VIES
     #         ('DE253130868', 'DE253130868', False),
-    #         ('esB87286357', 'ESB87286357', False),
+    #         ('esA64970486', 'ESA64970486', False),
     #     )
     #     self._test_validate_vat(cases)
 
+    def test_validate_vat_vies_true(self):
+        """ Validate just one """
+        self.company.vat_check_vies = True
+        cases = (
+            # vat => vat, vies_passed
+            # VATs signed up in VIES
+            ('ESB84718550', 'ESB84718550', True),
+        )
+        self._test_validate_vat(cases)
+
     def test_validate_vat_no_vies(self):
         """
         Validate VAT when company 'vat_check_vies' option is False