diff --git a/tests/unit/test_config_file_finder.py b/tests/unit/test_config_file_finder.py
index 44da8d4..c0231f8 100644
--- a/tests/unit/test_config_file_finder.py
+++ b/tests/unit/test_config_file_finder.py
@@ -48,15 +48,15 @@ def test_cli_config_double_read():
 
 @pytest.mark.parametrize('cwd,expected', [
     # Root directory of project
-    ('.',
+    (os.path.abspath('.'),
         [os.path.abspath('setup.cfg'),
             os.path.abspath('tox.ini')]),
     # Subdirectory of project directory
-    ('src',
+    (os.path.abspath('src'),
         [os.path.abspath('setup.cfg'),
             os.path.abspath('tox.ini')]),
     # Outside of project directory
-    ('/',
+    (os.path.abspath('/'),
         []),
 ])
 def test_generate_possible_local_files(cwd, expected):