diff --git a/Lib/test/test_posix.py b/Lib/test/test_posix.py
index 085815f2c99baf..4fba921cbf7ad2 100644
--- a/Lib/test/test_posix.py
+++ b/Lib/test/test_posix.py
@@ -415,8 +415,10 @@ def test_posix_fallocate(self):
             if inst.errno == errno.EINVAL and sys.platform.startswith(
                 ('sunos', 'freebsd', 'openbsd', 'gnukfreebsd')):
                 raise unittest.SkipTest("test may fail on ZFS filesystems")
-            elif inst.errno == errno.EOPNOTSUPP and sys.platform.startswith("netbsd"):
-                raise unittest.SkipTest("test may fail on FFS filesystems")
+            elif inst.errno == errno.EOPNOTSUPP:
+                # ZFS on FreeBSD, FFS on NetBSD, etc.
+                raise unittest.SkipTest(
+                    "the file system does not support posix_fallocate()")
             else:
                 raise
         finally: