diff --git a/Lib/test/test_cmd_line.py b/Lib/test/test_cmd_line.py
index 21511b896cad17..f7925eb795c71e 100644
--- a/Lib/test/test_cmd_line.py
+++ b/Lib/test/test_cmd_line.py
@@ -369,6 +369,8 @@ def test_closed_stdout(self):
     # Issue #7111: Python should work without standard streams
 
     @unittest.skipIf(os.name != 'posix', "test needs POSIX semantics")
+    @unittest.skipIf(sys.platform == "vxworks",
+                         "test needs preexec support in subprocess.Popen")
     def _test_no_stdio(self, streams):
         code = """if 1:
             import os, sys