diff --git a/usr.bin/less/Makefile b/usr.bin/less/Makefile
index c55ce3581cbf..27415573a8ee 100644
--- a/usr.bin/less/Makefile
+++ b/usr.bin/less/Makefile
@@ -1,25 +1,23 @@
 # $FreeBSD$
 
 PACKAGE=	runtime
 PROG=	less
 SRCS=	main.c screen.c brac.c ch.c charset.c cmdbuf.c command.c cvt.c \
 	decode.c edit.c filename.c forwback.c help.c ifile.c input.c \
 	jump.c lesskey_parse.c \
 	line.c linenum.c lsystem.c mark.c optfunc.c option.c \
 	opttbl.c os.c output.c pattern.c position.c prompt.c search.c \
 	signal.c tags.c ttyin.c version.c xbuf.c
 SCRIPTS=lesspipe.sh zless.sh
 SCRIPTSNAME_lesspipe.sh=lesspipe.sh
 LIBADD=	tinfow
 LINKS=	${BINDIR}/less ${BINDIR}/more \
 	${BINDIR}/zless ${BINDIR}/bzless \
 	${BINDIR}/zless ${BINDIR}/xzless \
 	${BINDIR}/zless ${BINDIR}/lzless \
 	${BINDIR}/zless ${BINDIR}/zstdless
 MLINKS=	less.1 more.1
 CLEANFILES= less.1
 
 .include "Makefile.common"
 .include <bsd.prog.mk>
-
-CWARNFLAGS+=	${NO_WDEPRECATED_NON_PROTOTYPE}
diff --git a/usr.bin/lessecho/Makefile b/usr.bin/lessecho/Makefile
index 0d40cc209548..af0a7c1550ab 100644
--- a/usr.bin/lessecho/Makefile
+++ b/usr.bin/lessecho/Makefile
@@ -1,10 +1,8 @@
 # $FreeBSD$
 
 PROG=	lessecho
 SRCS=	lessecho.c version.c
 CLEANFILES= lessecho.1
 
 .include "${SRCTOP}/usr.bin/less/Makefile.common"
 .include <bsd.prog.mk>
-
-CWARNFLAGS+=	${NO_WDEPRECATED_NON_PROTOTYPE}
diff --git a/usr.bin/lesskey/Makefile b/usr.bin/lesskey/Makefile
index 6809d9dba124..4677e7c7e6c7 100644
--- a/usr.bin/lesskey/Makefile
+++ b/usr.bin/lesskey/Makefile
@@ -1,10 +1,8 @@
 # $FreeBSD$
 
 PROG=	lesskey
 SRCS=	lesskey.c lesskey_parse.c version.c xbuf.c
 CLEANFILES= lesskey.1
 
 .include "${SRCTOP}/usr.bin/less/Makefile.common"
 .include <bsd.prog.mk>
-
-CWARNFLAGS+=	${NO_WDEPRECATED_NON_PROTOTYPE}