diff --git a/usr.bin/awk/Makefile b/usr.bin/awk/Makefile
index a7c0442d57d5..4ea401b99cd7 100644
--- a/usr.bin/awk/Makefile
+++ b/usr.bin/awk/Makefile
@@ -25,7 +25,7 @@ ytab.h: awkgram.c awkgram.h .NOMETA
 	ln -sf ${.ALLSRC:M*.h} ${.TARGET}
 
 proctab.c: maketab
-	${BTOOLSPATH:U.}/maketab > proctab.c
+	${BTOOLSPATH:U.}/maketab awkgram.h > proctab.c
 
 build-tools: maketab
 maketab: ytab.h maketab.c ${BUILD_TOOLS_META}