Oversight in previous commit for test_pep277.
diff --git a/Lib/test/test_pep277.py b/Lib/test/test_pep277.py
index 9d98f21..602c064 100644
--- a/Lib/test/test_pep277.py
+++ b/Lib/test/test_pep277.py
@@ -142,7 +142,7 @@
             self._apply_failure(os.rmdir, name)
             self._apply_failure(os.remove, name)
             # listdir may append a wildcard to the filename, so dont check
-            self._apply_failure(os.listdir, name, False)
+            self._apply_failure(os.listdir, name, check_filename=False)
 
     # Skip the test on darwin, because darwin uses a normalization different
     # than Python NFD normalization: filenames are different even if we use