diff --git a/commands/awk/Makefile b/commands/awk/Makefile
index 24898ca32..469184f10 100644
--- a/commands/awk/Makefile
+++ b/commands/awk/Makefile
@@ -5,6 +5,8 @@ SRCS=	awkgram.y b.c lex.c lib.c main.c parse.c proctab.c run.c tran.c
 YHEADER=	yes
 QUIET_YACC=	yes
 
+CPPFLAGS+= -I. -I${.CURDIR}
+
 build-tools: maketab
 
 proctab.c: maketab