diff --git a/account_invoice_tax_required/tests/test_account_invoice_tax_required.py b/account_invoice_tax_required/tests/test_account_invoice_tax_required.py
index b5e12846a..b92ab6407 100644
--- a/account_invoice_tax_required/tests/test_account_invoice_tax_required.py
+++ b/account_invoice_tax_required/tests/test_account_invoice_tax_required.py
@@ -68,8 +68,6 @@ class TestAccountInvoiceTaxRequired(TransactionCase):
     def test_exception(self):
         """Validate invoice without tax must raise exception
         """
-        self.invoice.action_date_assign()
-        self.invoice.action_move_create()
         with self.assertRaises(exceptions.Warning):
             self.invoice.with_context(
-                test_tax_required=True).invoice_validate()
+                test_tax_required=True).action_invoice_open()