diff --git a/sbin/modload/modload.8 b/sbin/modload/modload.8
index a35899fea6a7..bbfed2290102 100644
--- a/sbin/modload/modload.8
+++ b/sbin/modload/modload.8
@@ -1,4 +1,4 @@
-.\" $NetBSD: modload.8,v 1.23 2003/02/25 10:34:59 wiz Exp $
+.\" $NetBSD: modload.8,v 1.24 2003/09/06 19:23:21 jdolecek Exp $
 .\"
 .\" Copyright (c) 1993 Christopher G. Demetriou
 .\" All rights reserved.
@@ -32,7 +32,7 @@
 .\"
 .\" <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
 .\"
-.Dd April 30, 1999
+.Dd September 6, 2003
 .Dt MODLOAD 8
 .Os
 .Sh NAME
@@ -40,7 +40,7 @@
 .Nd load a kernel module
 .Sh SYNOPSIS
 .Nm
-.Op Fl dnvsS
+.Op Fl dfnsSv
 .Op Fl A Ar kernel
 .Op Fl e Ar entry
 .Op Fl p Ar postinstall
@@ -62,6 +62,14 @@ Debug.
 Used to debug
 .Nm
 itself.
+.It Fl f
+This forces load of the module, even if it doesn't match currently
+running kernel. When LKM is loaded, kernel normally checks if the LKM
+is compatible with the running kernel. This option disables this check.
+.Em Note
+incompatible LKM can cause system instability, including data loss
+or corruption. Don't use this option unless you are sure what you
+are doing.
 .It Fl n
 Do everything, except calling the module entry point (and any
 post-install program).
diff --git a/sbin/modload/modload.c b/sbin/modload/modload.c
index 10719f34523f..f24312362abf 100644
--- a/sbin/modload/modload.c
+++ b/sbin/modload/modload.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: modload.c,v 1.40 2003/07/13 07:45:27 itojun Exp $	*/
+/*	$NetBSD: modload.c,v 1.41 2003/09/06 19:23:20 jdolecek Exp $	*/
 
 /*
  * Copyright (c) 1993 Terrence R. Lambert.
@@ -34,7 +34,7 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: modload.c,v 1.40 2003/07/13 07:45:27 itojun Exp $");
+__RCSID("$NetBSD: modload.c,v 1.41 2003/09/06 19:23:20 jdolecek Exp $");
 #endif /* not lint */
 
 #include <sys/param.h>
@@ -69,6 +69,7 @@ __RCSID("$NetBSD: modload.c,v 1.40 2003/07/13 07:45:27 itojun Exp $");
 
 int debug = 0;
 int verbose = 0;
+u_long force = 0;
 char *out = NULL;
 int symtab = 0;
 int Sflag;
@@ -121,7 +122,7 @@ usage(void)
 {
 
 	fprintf(stderr, "usage:\n");
-	fprintf(stderr, "modload [-d] [-v] [-n] [-s] [-S] "
+	fprintf(stderr, "modload [-dfnsSv] "
 	    "[-A <kernel>] [-e <entry>]\n");
 	fprintf(stderr,
 	    "        [-p <postinstall>] [-o <output file>] <input file>\n");
@@ -257,11 +258,14 @@ main(int argc, char **argv)
 	void *modentry;	/* XXX */
 	int noready = 0;
 
-	while ((c = getopt(argc, argv, "dnvse:p:o:A:ST:")) != -1) {
+	while ((c = getopt(argc, argv, "dfnvse:p:o:A:ST:")) != -1) {
 		switch (c) {
 		case 'd':
 			debug = 1;
 			break;	/* debug */
+		case 'f':
+			force = 1;
+			break;	/* force load */
 		case 'v':
 			verbose = 1;
 			break;	/* verbose */
@@ -440,6 +444,14 @@ main(int argc, char **argv)
 
 	fileopen |= PART_RESRV;
 
+	if (force) {
+		if (ioctl(devfd, LMFORCE, &force) == -1)
+			err(10, "can't force load");
+
+		warnx("Forced load of LKM '%s'. MAY CAUSE SYSTEM INSTABILITY.",
+			modout);
+	}
+
 	/*
 	 * Relink at kernel load address
 	 */