diff --git a/sys/modules/Makefile.inc b/sys/modules/Makefile.inc
index 9dc38af9623..b20b99b7a75 100644
--- a/sys/modules/Makefile.inc
+++ b/sys/modules/Makefile.inc
@@ -4,3 +4,4 @@
 CFLAGS+= -DPC98
 .endif
 
+SUBDIR_PARALLEL=	yes
diff --git a/sys/modules/drm2/Makefile b/sys/modules/drm2/Makefile
index 701d5dc5cc5..6ba0def9597 100644
--- a/sys/modules/drm2/Makefile
+++ b/sys/modules/drm2/Makefile
@@ -3,8 +3,6 @@
 SYSDIR?=${.CURDIR}/../..
 .include "${SYSDIR}/conf/kern.opts.mk"
 
-SUBDIR_PARALLEL=
-
 .if ${MACHINE_CPUARCH} == "amd64"
 _i915kms=	i915kms
 _radeonkms=	radeonkms
diff --git a/sys/modules/drm2/radeonkmsfw/Makefile b/sys/modules/drm2/radeonkmsfw/Makefile
index f885da96343..167743c96e7 100644
--- a/sys/modules/drm2/radeonkmsfw/Makefile
+++ b/sys/modules/drm2/radeonkmsfw/Makefile
@@ -1,7 +1,5 @@
 # $FreeBSD$
 
-SUBDIR_PARALLEL=
-
 SUBDIR=									\
 	ARUBA_me							\
 	ARUBA_pfp							\
diff --git a/sys/modules/netgraph/Makefile b/sys/modules/netgraph/Makefile
index 1c787f64af3..c9b5748a7b4 100644
--- a/sys/modules/netgraph/Makefile
+++ b/sys/modules/netgraph/Makefile
@@ -62,6 +62,4 @@ _bluetooth=	bluetooth
 _mppc=		mppc
 .endif
 
-SUBDIR_PARALLEL=
-
 .include <bsd.subdir.mk>
diff --git a/sys/modules/usb/Makefile b/sys/modules/usb/Makefile
index da3d7767403..ed8edcf510f 100644
--- a/sys/modules/usb/Makefile
+++ b/sys/modules/usb/Makefile
@@ -28,11 +28,6 @@
 SYSDIR?=${.CURDIR}/../..
 .include "${SYSDIR}/conf/kern.opts.mk"
 
-#
-# Allow USB modules to be built in parallel
-#
-SUBDIR_PARALLEL=
-
 #
 # Check for common USB debug flags to pass when building the USB
 # modules in this directory: