diff --git a/Lib/ctypes/test/test_values.py b/Lib/ctypes/test/test_values.py
index 9551e7ae9f6..c7c78ce4e59 100644
--- a/Lib/ctypes/test/test_values.py
+++ b/Lib/ctypes/test/test_values.py
@@ -28,8 +28,7 @@ class ValuesTestCase(unittest.TestCase):
         ctdll = CDLL(_ctypes_test.__file__)
         self.assertRaises(ValueError, c_int.in_dll, ctdll, "Undefined_Symbol")
 
-@unittest.skipUnless(sys.platform == 'win32', 'Windows-specific test')
-class Win_ValuesTestCase(unittest.TestCase):
+class PythonValuesTestCase(unittest.TestCase):
     """This test only works when python itself is a dll/shared library"""
 
     def test_optimizeflag(self):
@@ -76,7 +75,7 @@ class Win_ValuesTestCase(unittest.TestCase):
             if entry.name in bootstrap_expected:
                 bootstrap_seen.append(entry.name)
                 self.assertTrue(entry.size,
-                    "{} was reported as having no size".format(entry.name))
+                    "{!r} was reported as having no size".format(entry.name))
                 continue
             items.append((entry.name, entry.size))