diff --git a/mistral_tempest_tests/tests/api/v2/test_action_executions.py b/mistral_tempest_tests/tests/api/v2/test_action_executions.py
index 4d5ff9a..edb7b3a 100644
--- a/mistral_tempest_tests/tests/api/v2/test_action_executions.py
+++ b/mistral_tempest_tests/tests/api/v2/test_action_executions.py
@@ -46,9 +46,11 @@ class ActionExecutionTestsV2(base.TestCase):
             try:
                 cls.client.delete_obj('action_executions', action_ex)
             except Exception as e:
-                LOG.exception('Exception raised when deleting '
-                              'action_executions %s, error message: %s.'
-                              % (action_ex, six.text_type(e)))
+                LOG.exception(
+                    'Exception raised when deleting '
+                    'action_executions %s, error message: %s.',
+                    action_ex, six.text_type(e)
+                )
 
         cls.client.action_executions = []
 
diff --git a/mistral_tempest_tests/tests/scenario/engine/actions/v2/test_ssh_actions.py b/mistral_tempest_tests/tests/scenario/engine/actions/v2/test_ssh_actions.py
index 4b998f8..38e3231 100644
--- a/mistral_tempest_tests/tests/scenario/engine/actions/v2/test_ssh_actions.py
+++ b/mistral_tempest_tests/tests/scenario/engine/actions/v2/test_ssh_actions.py
@@ -100,7 +100,7 @@ class SSHActionsTestsV2(base.TestCaseAdvanced):
     def _wait_until_server_up(cls, server_ip, timeout=120, delay=2):
         seconds_remain = timeout
 
-        LOG.info("Waiting server SSH [IP=%s]..." % server_ip)
+        LOG.info("Waiting server SSH [IP=%s]...", server_ip)
 
         while seconds_remain > 0:
             try:
@@ -123,7 +123,7 @@ class SSHActionsTestsV2(base.TestCaseAdvanced):
     def _wait_until_server_active(cls, server_id, timeout=60, delay=2):
         seconds_remain = timeout
 
-        LOG.info("Waiting server [id=%s]..." % server_id)
+        LOG.info("Waiting server [id=%s]...", server_id)
 
         while seconds_remain > 0:
             server_info = cls.mgr.servers_client.show_server(server_id)
@@ -141,7 +141,7 @@ class SSHActionsTestsV2(base.TestCaseAdvanced):
     def _wait_until_server_delete(cls, server_id, timeout=60, delay=2):
         seconds_remain = timeout
 
-        LOG.info("Deleting server [id=%s]..." % server_id)
+        LOG.info("Deleting server [id=%s]...", server_id)
 
         while seconds_remain > 0:
             try:
@@ -181,9 +181,7 @@ class SSHActionsTestsV2(base.TestCaseAdvanced):
             overwrite=True
         )
 
-        LOG.info(
-            "Private key saved to %s" % cls.key_dir + cls.key_name
-        )
+        LOG.info("Private key saved to %s", cls.key_dir + cls.key_name)
 
         # Create keypair in nova.
         cls.mgr.keypairs_client.create_keypair(