diff --git a/pep-0353.txt b/pep-0353.txt
index 9adf3680e..ce66fdfde 100644
--- a/pep-0353.txt
+++ b/pep-0353.txt
@@ -72,7 +72,8 @@ buffer interface function types are now called readbufferproc,
 writebufferproc, segcountproc, and charbufferproc.
 
 A new conversion code 'n' is introduced for PyArg_ParseTuple
-and Py_BuildValue, which operates on Py_ssize_t.
+Py_BuildValue, PyObject_CallFunction and PyObject_CallMethod.
+This code operates on Py_ssize_t.
 
 The conversion codes 's#' and 't#' will output Py_ssize_t
 if the macro PY_SSIZE_T_CLEAN is defined before Python.h