diff -r 45713818fd81 -r e9471729519e Doc/howto/clinic.rst
--- a/Doc/howto/clinic.rst	Thu Nov 24 23:31:59 2016 +0100
+++ b/Doc/howto/clinic.rst	Fri Nov 25 01:28:30 2016 +0100
@@ -439,8 +439,9 @@
         #define __PICKLE_PICKLER_DUMP_METHODDEF    \
         {"dump", (PyCFunction)__pickle_Pickler_dump, METH_O, __pickle_Pickler_dump__doc__},
 
-    This static structure should be *exactly* the same as the existing static
-    :c:type:`PyMethodDef` structure for this builtin.
+    This static structure should be the same as the existing static
+    :c:type:`PyMethodDef` structure for this builtin, except for the flags: you
+    can keep the ``METH_FASTCALL`` if Argument Clinic used it.
 
     If any of these items differ in *any way*,
     adjust your Argument Clinic function specification and rerun