diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py
index 7a2bdb2377d9..688f6dc2001b 100644
--- a/Lib/test/test_io.py
+++ b/Lib/test/test_io.py
@@ -455,8 +455,8 @@ class BufferedRandomTest(unittest.TestCase):
 
 class TextIOWrapperTest(unittest.TestCase):
 
-##     def tearDown(self):
-##         test_support.unlink(test_support.TESTFN)
+    def tearDown(self):
+        test_support.unlink(test_support.TESTFN)
 
     def testNewlines(self):
         input_lines = [ "unix\n", "windows\r\n", "os9\r", "last\n", "nonl" ]