--- ./src/callbacks.c.orig	Wed Nov 10 18:28:31 1999
+++ ./src/callbacks.c	Wed Nov 10 18:41:40 1999
@@ -28,6 +28,9 @@
 #include <time.h>
 #include <unistd.h>
 #include <stdlib.h>
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
 
 #include "post_processing_on.xpm"
 #include "post_processing_off.xpm"
@@ -430,7 +433,7 @@
 
 #ifdef linux
         sprintf(serial_port_prefix, "/dev/ttyS");
-#elif defined(__FreeBSD__) || defined(__NetBSD__)
+#elif defined(BSD)
         sprintf(serial_port_prefix, "/dev/tty0");
 #else
         sprintf(serial_port_prefix, "/dev/tty0");
