diff --git a/sys/kern/vfs_export.c b/sys/kern/vfs_export.c
index 09adde1658db..052d1227d43c 100644
--- a/sys/kern/vfs_export.c
+++ b/sys/kern/vfs_export.c
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)vfs_subr.c	8.31 (Berkeley) 5/26/95
- * $Id: vfs_subr.c,v 1.134 1998/02/23 06:59:52 dyson Exp $
+ * $Id: vfs_subr.c,v 1.135 1998/03/01 04:18:44 dyson Exp $
  */
 
 /*
@@ -111,7 +111,7 @@ SYSCTL_INT(_debug, OID_AUTO, wantfreevnodes, CTLFLAG_RW, &wantfreevnodes, 0, "")
 static u_long freevnodes = 0;
 SYSCTL_INT(_debug, OID_AUTO, freevnodes, CTLFLAG_RD, &freevnodes, 0, "");
 
-int vfs_ioopt = 1;
+int vfs_ioopt = 0;
 SYSCTL_INT(_vfs, OID_AUTO, ioopt, CTLFLAG_RW, &vfs_ioopt, 0, "");
 
 struct mntlist mountlist;	/* mounted filesystem list */
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index 09adde1658db..052d1227d43c 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)vfs_subr.c	8.31 (Berkeley) 5/26/95
- * $Id: vfs_subr.c,v 1.134 1998/02/23 06:59:52 dyson Exp $
+ * $Id: vfs_subr.c,v 1.135 1998/03/01 04:18:44 dyson Exp $
  */
 
 /*
@@ -111,7 +111,7 @@ SYSCTL_INT(_debug, OID_AUTO, wantfreevnodes, CTLFLAG_RW, &wantfreevnodes, 0, "")
 static u_long freevnodes = 0;
 SYSCTL_INT(_debug, OID_AUTO, freevnodes, CTLFLAG_RD, &freevnodes, 0, "");
 
-int vfs_ioopt = 1;
+int vfs_ioopt = 0;
 SYSCTL_INT(_vfs, OID_AUTO, ioopt, CTLFLAG_RW, &vfs_ioopt, 0, "");
 
 struct mntlist mountlist;	/* mounted filesystem list */