diff --git a/tests/unit/test_test_module_names.py b/tests/unit/test_test_module_names.py
index a7b2bf94ad..485f737685 100644
--- a/tests/unit/test_test_module_names.py
+++ b/tests/unit/test_test_module_names.py
@@ -13,33 +13,33 @@ from tests.support.unit import TestCase
 from tests.support.paths import CODE_DIR
 
 EXCLUDED_DIRS = [
-    'tests/pkg',
-    'tests/perf',
-    'tests/support',
-    'tests/unit/utils/cache_mods',
-    'tests/unit/modules/inspectlib',
-    'tests/unit/modules/zypp/',
-    'tests/unit/templates/files',
-    'tests/integration/files/',
-    'tests/integration/cloud/helpers',
+    os.path.join('tests', 'pkg'),
+    os.path.join('tests', 'perf'),
+    os.path.join('tests', 'support'),
+    os.path.join('tests', 'unit', 'utils', 'cache_mods'),
+    os.path.join('tests', 'unit', 'modules', 'inspectlib'),
+    os.path.join('tests', 'unit', 'modules', 'zypp'),
+    os.path.join('tests', 'unit', 'templates', 'files'),
+    os.path.join('tests', 'integration', 'files'),
+    os.path.join('tests', 'integration', 'cloud', 'helpers'),
 ]
 EXCLUDED_FILES = [
-    'tests/eventlisten.py',
-    'tests/buildpackage.py',
-    'tests/saltsh.py',
-    'tests/minionswarm.py',
-    'tests/wheeltest.py',
-    'tests/runtests.py',
-    'tests/jenkins.py',
-    'tests/salt-tcpdump.py',
-    'tests/conftest.py',
-    'tests/packdump.py',
-    'tests/consist.py',
-    'tests/modparser.py',
-    'tests/committer_parser.py',
-    'tests/zypp_plugin.py',
-    'tests/unit/transport/mixins.py',
-    'tests/integration/utils/testprogram.py',
+    os.path.join('tests', 'eventlisten.py'),
+    os.path.join('tests', 'buildpackage.py'),
+    os.path.join('tests', 'saltsh.py'),
+    os.path.join('tests', 'minionswarm.py'),
+    os.path.join('tests', 'wheeltest.py'),
+    os.path.join('tests', 'runtests.py'),
+    os.path.join('tests', 'jenkins.py'),
+    os.path.join('tests', 'salt-tcpdump.py'),
+    os.path.join('tests', 'conftest.py'),
+    os.path.join('tests', 'packdump.py'),
+    os.path.join('tests', 'consist.py'),
+    os.path.join('tests', 'modparser.py'),
+    os.path.join('tests', 'committer_parser.py'),
+    os.path.join('tests', 'zypp_plugin.py'),
+    os.path.join('tests', 'unit', 'transport', 'mixins.py'),
+    os.path.join('tests', 'integration', 'utils', 'testprogram.py'),
 ]