diff --git a/sysutils/lsof/patches/patch-dialects_n+obsd_dnode1_c b/sysutils/lsof/patches/patch-dialects_n+obsd_dnode1_c
new file mode 100644
index 00000000000..42c52718a74
--- /dev/null
+++ b/sysutils/lsof/patches/patch-dialects_n+obsd_dnode1_c
@@ -0,0 +1,11 @@
+$OpenBSD: patch-dialects_n+obsd_dnode1_c,v 1.1 2004/02/07 07:20:16 sturm Exp $
+--- dialects/n+obsd/dnode1.c.orig	2004-02-06 21:28:57.000000000 +0100
++++ dialects/n+obsd/dnode1.c	2004-02-06 21:29:44.000000000 +0100
+@@ -48,6 +48,7 @@ static char *rcsid = "$Id: dnode1.c,v 1.
+ 
+ #undef	doff_t
+ #undef	i_dev
++#undef	i_devvp
+ #undef	i_number
+ #undef	IN_ACCESS
+ #undef	IN_LOCKED