diff --git a/gnu/usr.bin/gdb6/gdb/Makefile b/gnu/usr.bin/gdb6/gdb/Makefile
index 013c82e7c7b9..9b20825ee8d4 100644
--- a/gnu/usr.bin/gdb6/gdb/Makefile
+++ b/gnu/usr.bin/gdb6/gdb/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.4 2006/07/10 23:01:56 ross Exp $
+#	$NetBSD: Makefile,v 1.5 2006/10/21 21:05:57 apb Exp $
 
 .include "../Makefile.inc"
 
@@ -78,5 +78,8 @@ LDADD+=                -lpthread_dbg
 
 .include <bsd.prog.mk>
 
+# Don't run yacc/bison.
+.y.c .y.h:
+
 .PATH: ${DIST}/gdb ${DIST}/gdb/mi ${DIST}/gdb/cli ${DIST}/gdb/tui \
     ${DIST}/gdb/signals ${DIST}/gdb/doc ${.CURDIR}/../arch/${MACHINE_ARCH}