--- smtpio.c.orig	Sat Jun  5 10:54:01 1999
+++ smtpio.c	Sat Jun  5 14:55:46 1999
@@ -17,6 +17,7 @@
 */
 
 #include "smtpio.h"
+#include <sys/param.h>
 
 static char *smtp_errlist[] = {"",
                                ": Hostname failed to resolve",