diff --git a/tox.ini b/tox.ini
index 3c71eea1edd..fc5fbbf38ff 100644
--- a/tox.ini
+++ b/tox.ini
@@ -101,8 +101,8 @@ commands = {posargs}
 commands = sphinx-build -W -b html doc/source doc/build/html
 
 [testenv:py34]
-commands = python -m testtools.run \
-    {posargs:neutron.tests.unit.test_context \
+commands = python setup.py test --testr-args='{posargs: \
+     neutron.tests.unit.test_context \
      neutron.tests.unit.services.metering.drivers.test_iptables \
      neutron.tests.unit.services.metering.agents.test_metering_agent \
      neutron.tests.unit.services.test_provider_configuration \
@@ -255,7 +255,7 @@ commands = python -m testtools.run \
      neutron.tests.unit.notifiers.test_nova \
      neutron.tests.unit.notifiers.test_batch_notifier \
      neutron.tests.unit.api.test_extensions \
-     neutron.tests.unit.db.test_db_base_plugin_common}
+     neutron.tests.unit.db.test_db_base_plugin_common}'
 
 [flake8]
 # E125 continuation line does not distinguish itself from next logical line