diff --git a/sbin/mount_umap/Makefile b/sbin/mount_umap/Makefile
index 49157cd53513..59c1ac1d64c9 100644
--- a/sbin/mount_umap/Makefile
+++ b/sbin/mount_umap/Makefile
@@ -5,7 +5,7 @@ SRCS=	mount_umap.c getmntopts.c
 MAN8=	mount_umap.8
 
 MOUNT=	${.CURDIR}/../mount
-CFLAGS+= -I/sys -I${MOUNT}
+CFLAGS+= -I.${.CURDIR}/../../sys -I${MOUNT}
 .PATH:	${MOUNT}
 
 .include <bsd.prog.mk>
diff --git a/sbin/mount_umapfs/Makefile b/sbin/mount_umapfs/Makefile
index 49157cd53513..59c1ac1d64c9 100644
--- a/sbin/mount_umapfs/Makefile
+++ b/sbin/mount_umapfs/Makefile
@@ -5,7 +5,7 @@ SRCS=	mount_umap.c getmntopts.c
 MAN8=	mount_umap.8
 
 MOUNT=	${.CURDIR}/../mount
-CFLAGS+= -I/sys -I${MOUNT}
+CFLAGS+= -I.${.CURDIR}/../../sys -I${MOUNT}
 .PATH:	${MOUNT}
 
 .include <bsd.prog.mk>