diff --git a/.testr.conf b/.testr.conf
index 6d83b3c..87d049d 100644
--- a/.testr.conf
+++ b/.testr.conf
@@ -2,6 +2,6 @@
 test_command=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} \
              OS_STDERR_CAPTURE=${OS_STDERR_CAPTURE:-1} \
              OS_TEST_TIMEOUT=${OS_TEST_TIMEOUT:-60} \
-             ${PYTHON:-python} -m subunit.run discover -t ./ . $LISTOPT $IDOPTION
+             ${PYTHON:-python} -m subunit.run discover -t ./ ${OS_TEST_PATH:-./patrole_tempest_plugin/tests/unit} $LISTOPT $IDOPTION
 test_id_option=--load-list $IDFILE
 test_list_option=--list
diff --git a/test-whitelist.txt b/test-whitelist.txt
deleted file mode 100644
index 162992a..0000000
--- a/test-whitelist.txt
+++ /dev/null
@@ -1 +0,0 @@
-patrole_tempest_plugin.tests.unit.test*
diff --git a/tox.ini b/tox.ini
index d2e83e9..41e893c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,6 +8,9 @@
 install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
 setenv =
    VIRTUAL_ENV={envdir}
+   OS_TEST_PATH=./patrole_tempest_plugin/tests/unit
+   LANGUAGE=en_US
+   LC_ALL=en_US.utf-8
    PYTHONWARNINGS=default::DeprecationWarning
 passenv = OS_STDOUT_CAPTURE OS_STDERR_CAPTURE OS_TEST_TIMEOUT OS_TEST_LOCK_PATH OS_TEST_PATH http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY
 whitelist_externals = find
@@ -15,7 +18,7 @@
        -r{toxinidir}/test-requirements.txt
 commands =
     find . -type f -name "*.pyc" -delete
-    ostestr {posargs} --whitelist-file test-whitelist.txt
+    ostestr {posargs}
 
 [testenv:pep8]
 commands = flake8 {posargs}