diff --git a/pep-3154.txt b/pep-3154.txt
index 6165fc258..e4dd9218e 100644
--- a/pep-3154.txt
+++ b/pep-3154.txt
@@ -134,10 +134,13 @@ pickling self-referential sets [2]_.
 Calling __new__ with keyword arguments
 --------------------------------------
 
-Currently, classes whose __new__ mandates the use of keyword-only
+Currently, classes whose ``__new__`` mandates the use of keyword-only
 arguments can not be pickled (or, rather, unpickled) [3]_.  Both a new
-special method (``__getnewargs_ex__`` ?) and a new opcode (NEWOBJ_EX ?)
-are needed.
+special method (``__getnewargs_ex__``) and a new opcode (NEWOBJ_EX)
+are needed.  The ``__getnewargs_ex__`` method, if it exists, must
+return a two-tuple ``(args, kwargs)`` where the first item is the
+tuple of positional arguments and the second item is the dict of
+keyword arguments for the class's ``__new__`` method.
 
 Better string encoding
 ----------------------