--- ppp-2.4.5.orig/pppd/demand.c	2009-11-16 23:26:07.000000000 +0100
+++ ppp-2.4.5/pppd/demand.c	2014-03-17 16:13:13.000000000 +0100
@@ -70,7 +70,7 @@ struct packet {
 struct packet *pend_q;
 struct packet *pend_qtail;
 
-static int active_packet __P((unsigned char *, int));
+static int active_packet (unsigned char *, int);
 
 /*
  * demand_conf - configure the interface for doing dial-on-demand.