diff --git a/setup.py b/setup.py
index ca880ae474..a400d22bad 100755
--- a/setup.py
+++ b/setup.py
@@ -139,6 +139,7 @@ setup(name=name,
     install_requires=requires,
     extras_require={
         'SWIFT': ['schwifty'],
+        'test': tests_require,
         },
     dependency_links=dependency_links,
     zip_safe=False,
@@ -146,7 +147,4 @@ setup(name=name,
     [trytond.modules]
     bank = trytond.modules.bank
     """,
-    test_suite='tests',
-    test_loader='trytond.test_loader:Loader',
-    tests_require=tests_require,
     )
diff --git a/tests/__init__.py b/tests/__init__.py
index 1f6d66a0ef..4effdfa4a2 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1,9 +1,2 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-
-try:
-    from trytond.modules.bank.tests.test_bank import suite
-except ImportError:
-    from .test_bank import suite
-
-__all__ = ['suite']
diff --git a/tests/test_bank.py b/tests/test_module.py
similarity index 95%
rename from tests/test_bank.py
rename to tests/test_module.py
index fb5b0bfead..54b9c095d8 100644
--- a/tests/test_bank.py
+++ b/tests/test_module.py
@@ -1,5 +1,6 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
+
 import unittest
 
 try:
@@ -7,13 +8,11 @@ try:
 except ImportError:
     schwifty = None
 
-import trytond.tests.test_tryton
 from trytond.model.exceptions import SQLConstraintError
+from trytond.modules.bank.exceptions import InvalidBIC
 from trytond.pool import Pool
 from trytond.tests.test_tryton import ModuleTestCase, with_transaction
 
-from ..exceptions import InvalidBIC
-
 
 class BankTestCase(ModuleTestCase):
     'Test Bank module'
@@ -157,8 +156,4 @@ class BankTestCase(ModuleTestCase):
         self.assertEqual(len(Bank.search([])), 1)
 
 
-def suite():
-    suite = trytond.tests.test_tryton.suite()
-    suite.addTests(unittest.TestLoader().loadTestsFromTestCase(
-            BankTestCase))
-    return suite
+del ModuleTestCase
diff --git a/tox.ini b/tox.ini
index fc6e872bac..7a6cf05836 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,8 +2,9 @@
 envlist = {py37,py38,py39,py310}-{sqlite,postgresql}
 
 [testenv]
+extras = test
 commands =
-    coverage run --include=.*/bank/* setup.py test
+    coverage run --include=.*/bank/* -m unittest discover -s tests
     coverage report --include=.*/bank/* --omit=*/tests/*
 deps =
     coverage