diff --git a/Lib/test/test_os/test_os.py b/Lib/test/test_os/test_os.py
index f9919e824b1abe..c6d20447086ae4 100644
--- a/Lib/test/test_os/test_os.py
+++ b/Lib/test/test_os/test_os.py
@@ -156,7 +156,8 @@ def test_getcwd_long_path(self):
                         # ("The filename or extension is too long")
                         break
                     except OSError as exc:
-                        if exc.errno == errno.ENAMETOOLONG:
+                        # DragonFly BSD raises EFAULT for a too long path.
+                        if exc.errno in (errno.ENAMETOOLONG, errno.EFAULT):
                             break
                         else:
                             raise