diff --git a/usr.bin/lex/Makefile b/usr.bin/lex/Makefile
index 479cda5339f3..5b7b6b23902c 100644
--- a/usr.bin/lex/Makefile
+++ b/usr.bin/lex/Makefile
@@ -19,7 +19,7 @@ SRCS=		scan.c ccl.c dfa.c ecs.c gen.c main.c misc.c nfa.c parse.y \
 LFLAGS+=	-is
 CFLAGS+=	-I. -I${.CURDIR}
 INCS=		FlexLexer.h
-INCSDIR=	${INCLUDEDIR}/g++
+INCSDIR=	${INCLUDEDIR}/c++/3.3
 MLINKS+=	lex.1 flex.1
 MLINKS+=	lex.1 flex++.1
 MLINKS+=	lex.1 lex++.1