diff --git a/gnu/usr.bin/groff/src/preproc/eqn/Makefile b/gnu/usr.bin/groff/src/preproc/eqn/Makefile
index f32b95f16883..ae9623b74b77 100644
--- a/gnu/usr.bin/groff/src/preproc/eqn/Makefile
+++ b/gnu/usr.bin/groff/src/preproc/eqn/Makefile
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.5 2003/07/01 12:38:09 mrg Exp $
+# $NetBSD: Makefile,v 1.6 2003/08/01 10:36:42 lukem Exp $
 
 # $FreeBSD: src/gnu/usr.bin/groff/src/preproc/eqn/Makefile,v 1.4 2003/05/01 13:22:19 ru Exp $
 
@@ -17,6 +17,7 @@ MAN=		eqn.1 neqn.1
 YFLAGS=		-d
 CLEANFILES=	eqn.cpp eqn_tab.h ${SCRIPTS} ${MAN} y.tab.c y.tab.h
 
+eqn.cpp: eqn.y
 eqn_tab.h: eqn.cpp
 lex.cpp: eqn_tab.h
 
diff --git a/gnu/usr.bin/groff/src/preproc/pic/Makefile b/gnu/usr.bin/groff/src/preproc/pic/Makefile
index 59b115992bea..07aa2d1e3682 100644
--- a/gnu/usr.bin/groff/src/preproc/pic/Makefile
+++ b/gnu/usr.bin/groff/src/preproc/pic/Makefile
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.6 2003/07/01 12:38:10 mrg Exp $
+# $NetBSD: Makefile,v 1.7 2003/08/01 10:36:43 lukem Exp $
 
 # $FreeBSD: src/gnu/usr.bin/groff/src/preproc/pic/Makefile,v 1.4 2003/05/01 13:22:20 ru Exp $
 
@@ -14,6 +14,7 @@ LDADD+=		${LIBGROFF} -lm
 YFLAGS=		-d
 CLEANFILES=	${MAN} pic.cpp pic_tab.h y.tab.c y.tab.h
 
+pic.cpp: pic.y
 pic_tab.h: pic.cpp
 lex.cpp: pic_tab.h
 
diff --git a/gnu/usr.bin/groff/src/preproc/refer/Makefile b/gnu/usr.bin/groff/src/preproc/refer/Makefile
index 901cd9af0a2b..7d0267e7cac7 100644
--- a/gnu/usr.bin/groff/src/preproc/refer/Makefile
+++ b/gnu/usr.bin/groff/src/preproc/refer/Makefile
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.6 2003/07/01 08:20:37 mrg Exp $
+# $NetBSD: Makefile,v 1.7 2003/08/01 10:36:43 lukem Exp $
 
 # $FreeBSD: src/gnu/usr.bin/groff/src/preproc/refer/Makefile,v 1.4 2003/05/01 13:22:20 ru Exp $
 
@@ -13,4 +13,6 @@ LDADD+=		${LIBBIB} ${LIBGROFF} -lm
 YFLAGS=		-d
 CLEANFILES=	label.cpp label_tab.h ${MAN} y.tab.c y.tab.h
 
+label.cpp: label.y
+
 .include <bsd.prog.mk>