diff --git a/Makefile.inc1 b/Makefile.inc1
index e1216d3514a7..0ffd05cd73cd 100644
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -131,7 +131,7 @@ TARGET_CPUTYPE?=${CPUTYPE}
 TARGET?=	${TARGET_ARCH}
 TARGET_CPUTYPE?=
 .endif
-_CPUTYPE!=	cd ${.CURDIR}; ${MAKE} -m ${.CURDIR}/share/mk \
+_CPUTYPE!=	${MAKE} -f /dev/null -m ${.CURDIR}/share/mk \
 		CPUTYPE=X${TARGET_CPUTYPE} -V CPUTYPE
 .if ${_CPUTYPE} != X${TARGET_CPUTYPE}
 .error CPUTYPE global should be set with ?=.