--- isdn_ppp.c.bak	Sun Jul  9 22:58:35 2000
+++ isdn_ppp.c	Sun Jul  9 22:57:45 2000
@@ -386,7 +386,9 @@
 int
 isdn_ppp_free(isdn_net_local * lp)
 {
+#ifdef	CONFIG_ISDN_MPP
 	isdn_net_local *master_lp = lp;
+#endif
 	unsigned long flags;
 	struct ippp_struct *is;