-GUILE_PROC(scm_make_soft_port, "make-soft-port", 2, 0, 0,
+SCM_DEFINE(scm_make_soft_port, "make-soft-port", 2, 0, 0,
(SCM pv, SCM modes),
"Returns a port capable of receiving or delivering characters as
specified by the @var{modes} string (@pxref{File Ports,