diff --git a/Lib/test/test_file2k.py b/Lib/test/test_file2k.py
index ebfd9e7..fc8bfe9 100644
--- a/Lib/test/test_file2k.py
+++ b/Lib/test/test_file2k.py
@@ -172,7 +172,7 @@
 class OtherFileTests(unittest.TestCase):
 
     def testOpenDir(self):
-        this_dir = os.path.dirname(__file__)
+        this_dir = os.path.dirname(__file__) or os.curdir
         for mode in (None, "w"):
             try:
                 if mode: