diff --git a/tests/dtoolutil/test_filename.py b/tests/dtoolutil/test_filename.py
index d24d9d52d7..698ed0e69f 100644
--- a/tests/dtoolutil/test_filename.py
+++ b/tests/dtoolutil/test_filename.py
@@ -21,4 +21,4 @@ def test_filename_ctor_pathlib():
 
     path = pathlib.Path(__file__)
     fn = Filename(path)
-    assert fn.to_os_specific_w() == str(path)
+    assert fn.to_os_specific_w().lower() == str(path).lower()