diff --git a/sys/arch/mipsco/mipsco/autoconf.c b/sys/arch/mipsco/mipsco/autoconf.c
index 564178c1fc34..aa0b9dcfd790 100644
--- a/sys/arch/mipsco/mipsco/autoconf.c
+++ b/sys/arch/mipsco/mipsco/autoconf.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: autoconf.c,v 1.13 2004/10/23 17:07:39 thorpej Exp $	*/
+/*	$NetBSD: autoconf.c,v 1.14 2005/06/09 13:48:12 he Exp $	*/
 
 /*
  * Copyright (c) 1992, 1993
@@ -85,7 +85,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.13 2004/10/23 17:07:39 thorpej Exp $");
+__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.14 2005/06/09 13:48:12 he Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -132,7 +132,7 @@ cpu_configure()
 	 * Kick off autoconfiguration
 	 */
 	s = splhigh();
-	if (config_rootfound("mainbus", "mainbus") == NULL)
+	if (config_rootfound("mainbus", NULL) == NULL)
 		panic("no mainbus found");
 	initcpu();
 }