diff --git a/mistral/tests/base.py b/mistral/tests/base.py
index 41a3abde5..6f1a2f12a 100644
--- a/mistral/tests/base.py
+++ b/mistral/tests/base.py
@@ -98,12 +98,14 @@ class BaseTest(unittest2.TestCase):
 
 class DbTestCase(BaseTest):
     def setUp(self):
+        super(DbTestCase, self).setUp()
         self.db_fd, self.db_path = tempfile.mkstemp()
         cfg.CONF.set_default('connection', 'sqlite:///' + self.db_path,
                              group='database')
         db_api.setup_db()
 
     def tearDown(self):
+        super(DbTestCase, self).tearDown()
         db_api.drop_db()
         os.close(self.db_fd)
         os.unlink(self.db_path)
diff --git a/mistral/tests/unit/actions/test_std_email_action.py b/mistral/tests/unit/actions/test_std_email_action.py
index 1279e9222..421b2be46 100644
--- a/mistral/tests/unit/actions/test_std_email_action.py
+++ b/mistral/tests/unit/actions/test_std_email_action.py
@@ -51,6 +51,7 @@ REMOTE_SMTP = False
 class SendEmailActionTest(base.BaseTest):
 
     def setUp(self):
+        super(SendEmailActionTest, self).setUp()
         self.params = {
             'to': ["dz@example.com, deg@example.com", "xyz@example.com"],
             'subject': "Multi word subject с русскими буквами",
diff --git a/mistral/tests/unit/workbook/test_get_on_state.py b/mistral/tests/unit/workbook/test_get_on_state.py
index ab1f782c2..bf6219419 100644
--- a/mistral/tests/unit/workbook/test_get_on_state.py
+++ b/mistral/tests/unit/workbook/test_get_on_state.py
@@ -28,6 +28,7 @@ from mistral.workbook import tasks
 
 class GetOnStateTest(base.BaseTest):
     def setUp(self):
+        super(GetOnStateTest, self).setUp()
         self.task = tasks.TaskSpec(SAMPLE_TASK_SPEC)
 
     def test_state_finish(self):
diff --git a/mistral/tests/unit/workbook/test_workbook.py b/mistral/tests/unit/workbook/test_workbook.py
index 19db36cc3..e15eac3c2 100644
--- a/mistral/tests/unit/workbook/test_workbook.py
+++ b/mistral/tests/unit/workbook/test_workbook.py
@@ -28,6 +28,7 @@ Workflow:
 
 class DSLModelTest(base.BaseTest):
     def setUp(self):
+        super(DSLModelTest, self).setUp()
         self.doc = base.get_resource("test_rest.yaml")
 
     def test_load_dsl(self):