diff --git a/Lib/test/test_os/test_posix.py b/Lib/test/test_os/test_posix.py
index 79e234cbcd2ae2..0cda17a232db53 100644
--- a/Lib/test/test_os/test_posix.py
+++ b/Lib/test/test_os/test_posix.py
@@ -823,8 +823,7 @@ def test_makedev(self):
         # a special case for NODEV, on others this is just an implementation
         # artifact.
         if (hasattr(posix, 'NODEV') and
-            sys.platform.startswith(('linux', 'macos', 'freebsd', 'dragonfly',
-                                     'sunos'))):
+            sys.platform.startswith(('linux', 'macos', 'freebsd', 'sunos'))):
             NODEV = posix.NODEV
             self.assertEqual(posix.major(NODEV), NODEV)
             self.assertEqual(posix.minor(NODEV), NODEV)