diff --git a/README.rst b/README.rst
index b206074..61bee8b 100644
--- a/README.rst
+++ b/README.rst
@@ -22,8 +22,6 @@ test execution modes:
   those for a combined test run.  This allows to speed up
   development or to use special resources of `remote machines`_.
 
-* ``--boxed``: (not available on Windows) run each test in a boxed_
-  subprocess to survive ``SEGFAULTS`` or otherwise dying processes
 
 * ``--looponfail``: run your tests repeatedly in a subprocess.  After each run
   py.test waits until a file in your project changes and then re-runs