diff --git a/Lib/test/test_filecmp.py b/Lib/test/test_filecmp.py
index b433ecc..c54119c 100644
--- a/Lib/test/test_filecmp.py
+++ b/Lib/test/test_filecmp.py
@@ -46,10 +46,11 @@
         self.dir = os.path.join(tmpdir, 'dir')
         self.dir_same = os.path.join(tmpdir, 'dir-same')
         self.dir_diff = os.path.join(tmpdir, 'dir-diff')
+        self.caseinsensitive = os.path.normcase('A') == os.path.normcase('a')
         data = 'Contents of file go here.\n'
         for dir in [self.dir, self.dir_same, self.dir_diff]:
             os.mkdir(dir)
-            if dir is self.dir_same:
+            if self.caseinsensitive and dir is self.dir_same:
                 fn = 'FiLe'     # Verify case-insensitive comparison
             else:
                 fn = 'file'
@@ -97,7 +98,10 @@
     def test_dircmp(self):
         # Check attributes for comparison of two identical directories
         d = filecmp.dircmp(self.dir, self.dir_same)
-        self.assertEqual([d.left_list, d.right_list],[['file'], ['FiLe']])
+        if self.caseinsensitive:
+            self.assertEqual([d.left_list, d.right_list],[['file'], ['FiLe']])
+        else:
+            self.assertEqual([d.left_list, d.right_list],[['file'], ['file']])
         self.failUnless(d.common == ['file'])
         self.failUnless(d.left_only == d.right_only == [])
         self.failUnless(d.same_files == ['file'])