diff --git a/usr.bin/kdump/Makefile.ioctl-c b/usr.bin/kdump/Makefile.ioctl-c
index 068a16b1f863..7247d0d0eb97 100644
--- a/usr.bin/kdump/Makefile.ioctl-c
+++ b/usr.bin/kdump/Makefile.ioctl-c
@@ -1,8 +1,10 @@
-#	$NetBSD: Makefile.ioctl-c,v 1.6 2003/04/13 05:04:00 christos Exp $
+#	$NetBSD: Makefile.ioctl-c,v 1.7 2003/04/18 14:43:49 christos Exp $
 
 # NOTE: <bsd.own.mk> needs to be previously .included for NETBSDSRCDIR
 
+.if !target(cleandir) && !target(obj)
 DEPFILES != grep -l '_IO.*(' ${DESTDIR}/usr/include/sys/*.h
+.endif
 
 ioctl.c: mkioctls ${DEPFILES}
 	CC="${CC}" DESTDIR=${DESTDIR} \