diff --git a/sys/modules/scc/Makefile b/sys/modules/scc/Makefile
index c1678b76f72..8a40e0b0007 100644
--- a/sys/modules/scc/Makefile
+++ b/sys/modules/scc/Makefile
@@ -5,7 +5,7 @@
 .if ${MACHINE} == "sparc64"
 scc_bfe= scc_bfe_ebus.c scc_bfe_sbus.c
 .endif
-.if ${MACHINE_ARCH} == "powerpc"
+.if ${MACHINE_CPUARCH} == "powerpc"
 scc_bfe= scc_bfe_macio.c scc_bfe_quicc.c
 .endif
 
diff --git a/sys/modules/sound/sound/Makefile b/sys/modules/sound/sound/Makefile
index 78f91d44553..42cfc24f011 100644
--- a/sys/modules/sound/sound/Makefile
+++ b/sys/modules/sound/sound/Makefile
@@ -44,7 +44,7 @@ CLEANFILES+=	feeder_eq_gen.h feeder_rate_gen.h snd_fxdiv_gen.h
 
 EXPORT_SYMS=	YES	# XXX evaluate
 
-.if ${MACHINE_ARCH} == "sparc64" || ${MACHINE_ARCH} == "powerpc"
+.if ${MACHINE_CPUARCH} == "sparc64" || ${MACHINE_CPUARCH} == "powerpc"
 # Create an empty opt_isa.h in order to keep kmod.mk from linking in an
 # existing one from KERNBUILDDIR which possibly has DEV_ISA defined so
 # sound.ko is always built without isadma support.