diff --git a/libexec/elvispreserve/Makefile b/libexec/elvispreserve/Makefile
index b3e824b05b61..3d868c9d7d11 100644
--- a/libexec/elvispreserve/Makefile
+++ b/libexec/elvispreserve/Makefile
@@ -1,6 +1,6 @@
 
 PROG=	elvispreserve
-CFLAGS=	-I${.CURDIR}/../../usr.bin/elvis
+CFLAGS+=-I${.CURDIR}/../../usr.bin/elvis
 BINOWN=	root
 BINMODE=4755
 MAN8=elvispreserve.0
diff --git a/usr.bin/elvisrecover/Makefile b/usr.bin/elvisrecover/Makefile
index 367ba55ce075..fbe5a7ce842d 100644
--- a/usr.bin/elvisrecover/Makefile
+++ b/usr.bin/elvisrecover/Makefile
@@ -1,7 +1,7 @@
 
 PROG=	elvisrecover
 #SRCS=	elvisrecover.c
-CFLAGS=	-I${.CURDIR}/../elvis
+CFLAGS+=-I${.CURDIR}/../elvis
 
 .include <bsd.prog.mk>
 .PATH:	${.CURDIR}/../elvis
diff --git a/usr.sbin/named/Makefile b/usr.sbin/named/Makefile
index 9da21e264c3a..1ca1760f511f 100644
--- a/usr.sbin/named/Makefile
+++ b/usr.sbin/named/Makefile
@@ -4,7 +4,7 @@
 ### ALLOC=storage.o
 PROG=	named
 MAN8=	named.0
-CFLAGS=	-O -DDEBUG -DSTATS
+CFLAGS+=-DDEBUG -DSTATS
 LDADD=	-lutil
 SRCS=	db_dump.c db_glue.c db_load.c db_lookup.c db_reload.c db_save.c \
 	db_update.c ns_forw.c ns_init.c ns_main.c ns_maint.c ns_req.c \