diff --git a/sys/modules/firewire/Makefile b/sys/modules/firewire/Makefile
index a8ea55cb9ea3..ca0c1eafc883 100644
--- a/sys/modules/firewire/Makefile
+++ b/sys/modules/firewire/Makefile
@@ -1,9 +1,8 @@
 # $FreeBSD$
 
-SUBDIR =
-SUBDIR += firewire
-SUBDIR += sbp
-SUBDIR += sbp_targ
-SUBDIR += fwe
+SUBDIR=	firewire \
+	fwe \
+	sbp \
+	sbp_targ
 
 .include <bsd.subdir.mk>
diff --git a/sys/modules/netgraph/Makefile b/sys/modules/netgraph/Makefile
index 49c1f47183d4..12dbe0dcd909 100644
--- a/sys/modules/netgraph/Makefile
+++ b/sys/modules/netgraph/Makefile
@@ -4,6 +4,7 @@
 SUBDIR=	UI \
 	async \
 	atm \
+	${_bluetooth} \
 	bpf \
 	bridge \
 	cisco \
@@ -21,6 +22,7 @@ SUBDIR=	UI \
 	ksocket \
 	l2tp \
 	lmi \
+	${_mppc} \
 	netgraph \
 	one2many \
 	ppp \
@@ -36,12 +38,12 @@ SUBDIR=	UI \
 	vjc
 
 .if !defined(NOCRYPT) && exists(${.CURDIR}/../../crypto/rc4/rc4.c)
-SUBDIR+=	mppc
+_mppc=		mppc
 .endif
 
 .if ${MACHINE_ARCH} == "i386"
 # Things that don't compile on alpha or are aout specific:
-SUBDIR+= bluetooth
+_bluetooth=	bluetooth
 .endif
 
 .include <bsd.subdir.mk>
diff --git a/sys/modules/syscons/Makefile b/sys/modules/syscons/Makefile
index 7e2f2c5d559f..b6cac1c93a33 100644
--- a/sys/modules/syscons/Makefile
+++ b/sys/modules/syscons/Makefile
@@ -1,20 +1,20 @@
 # $FreeBSD$
 
-SUBDIR =
-SUBDIR += blank
-SUBDIR += daemon
-SUBDIR += dragon
-SUBDIR += fade
-SUBDIR += fire
-SUBDIR += green
-SUBDIR += logo
-SUBDIR += rain
-SUBDIR += snake
-SUBDIR += star
-SUBDIR += warp
+SUBDIR=	${_apm} \
+	blank \
+	daemon \
+	dragon \
+	fade \
+	fire \
+	green \
+	logo \
+	rain \
+	snake \
+	star \
+	warp
 
 .if ${MACHINE_ARCH} == "i386"
-SUBDIR += apm
+_apm=	apm
 .endif
 
 .include <bsd.subdir.mk>