diff --git a/lkm/if_ppp/Makefile b/lkm/if_ppp/Makefile
index 54d0c1ed3b5..33c8f1a75b6 100644
--- a/lkm/if_ppp/Makefile
+++ b/lkm/if_ppp/Makefile
@@ -1,18 +1,20 @@
-#       $Id$
+#       $Id: Makefile,v 1.6 1997/02/22 12:48:06 peter Exp $
 
 .PATH:  ${.CURDIR}/../../sys/net
 KMOD=   if_ppp_mod
-SRCS=	bsd_comp.c if_ppp.c ppp_tty.c slcompress.c bpfilter.h ppp.h
+SRCS=	bsd_comp.c if_ppp.c ppp_tty.c slcompress.c bpfilter.h ppp.h opt_ppp.h
 NOMAN=
 PSEUDO_LKM=
 CFLAGS+= -I.
 
 NBPFILTER?=	0
 NPPP?=		2
+PPP_BSDCOMP?=	1
+PPP_DEFLATE?=	1
 PROTOS?=	-DINET
 
 CFLAGS+= ${PROTOS}
-CLEANFILES+=	bpfilter.h ppp.h
+CLEANFILES+=	bpfilter.h ppp.h opt_ppp.h
 
 bpfilter.h:
 	echo "#define NBPFILTER ${NBPFILTER}" > bpfilter.h
@@ -20,4 +22,8 @@ bpfilter.h:
 ppp.h:
 	echo "#define NPPP ${NPPP}" > ppp.h
 
+opt_ppp.h:
+	echo "#define PPP_BSDCOMP ${PPP_BSDCOMP}" > opt_ppp.h
+	echo "#define PPP_DEFLATE ${PPP_DEFLATE}" >> opt_ppp.h
+
 .include <bsd.kmod.mk>
diff --git a/sys/modules/if_ppp/Makefile b/sys/modules/if_ppp/Makefile
index 54d0c1ed3b5..33c8f1a75b6 100644
--- a/sys/modules/if_ppp/Makefile
+++ b/sys/modules/if_ppp/Makefile
@@ -1,18 +1,20 @@
-#       $Id$
+#       $Id: Makefile,v 1.6 1997/02/22 12:48:06 peter Exp $
 
 .PATH:  ${.CURDIR}/../../sys/net
 KMOD=   if_ppp_mod
-SRCS=	bsd_comp.c if_ppp.c ppp_tty.c slcompress.c bpfilter.h ppp.h
+SRCS=	bsd_comp.c if_ppp.c ppp_tty.c slcompress.c bpfilter.h ppp.h opt_ppp.h
 NOMAN=
 PSEUDO_LKM=
 CFLAGS+= -I.
 
 NBPFILTER?=	0
 NPPP?=		2
+PPP_BSDCOMP?=	1
+PPP_DEFLATE?=	1
 PROTOS?=	-DINET
 
 CFLAGS+= ${PROTOS}
-CLEANFILES+=	bpfilter.h ppp.h
+CLEANFILES+=	bpfilter.h ppp.h opt_ppp.h
 
 bpfilter.h:
 	echo "#define NBPFILTER ${NBPFILTER}" > bpfilter.h
@@ -20,4 +22,8 @@ bpfilter.h:
 ppp.h:
 	echo "#define NPPP ${NPPP}" > ppp.h
 
+opt_ppp.h:
+	echo "#define PPP_BSDCOMP ${PPP_BSDCOMP}" > opt_ppp.h
+	echo "#define PPP_DEFLATE ${PPP_DEFLATE}" >> opt_ppp.h
+
 .include <bsd.kmod.mk>