diff --git a/sbin/newfs_msdos/Makefile b/sbin/newfs_msdos/Makefile
index 3a2c49fed0db..d12cf0245df2 100644
--- a/sbin/newfs_msdos/Makefile
+++ b/sbin/newfs_msdos/Makefile
@@ -9,5 +9,6 @@ SRCS=	newfs_msdos.c mkfs_msdos.c
 .if ${MACHINE_CPUARCH} == "arm"
 WARNS?= 3
 .endif
+CSTD=	c11
 
 .include <bsd.prog.mk>
diff --git a/usr.sbin/makefs/Makefile b/usr.sbin/makefs/Makefile
index e39a07f76965..cbe4f497d7d1 100644
--- a/usr.sbin/makefs/Makefile
+++ b/usr.sbin/makefs/Makefile
@@ -17,6 +17,7 @@ SRCS=	cd9660.c \
 MAN=	makefs.8
 
 WARNS?=	2
+CSTD=	c11
 
 .include "${SRCDIR}/cd9660/Makefile.inc"
 .include "${SRCDIR}/ffs/Makefile.inc"