diff --git a/sys/i386/isa/bt742a.c b/sys/i386/isa/bt742a.c
index 7a1333cf2d1c..49369c03b498 100644
--- a/sys/i386/isa/bt742a.c
+++ b/sys/i386/isa/bt742a.c
@@ -12,7 +12,7 @@
  * on the understanding that TFS is not responsible for the correct
  * functioning of this software in any circumstances.
  *
- *      $Id: bt742a.c,v 1.12 1993/12/19 00:50:29 wollman Exp $
+ *      $Id: bt742a.c,v 1.13 1994/03/20 00:30:00 wollman Exp $
  */
 
 /*
@@ -593,6 +593,7 @@ btattach(dev)
 	bt->sc_link.adapter_targ = bt->bt_scsi_dev;
 	bt->sc_link.adapter = &bt_switch;
 	bt->sc_link.device = &bt_dev;
+	bt->sc_link.flags = SDEV_BOUNCE;
 
 	/*
 	 * ask the adapter what subunits are present
diff --git a/sys/i386/isa/ultra14f.c b/sys/i386/isa/ultra14f.c
index 2c922adadc79..c1849040b75e 100644
--- a/sys/i386/isa/ultra14f.c
+++ b/sys/i386/isa/ultra14f.c
@@ -19,7 +19,7 @@
  * commenced: Sun Sep 27 18:14:01 PDT 1992
  * slight mod to make work with 34F as well: Wed Jun  2 18:05:48 WST 1993
  *
- *      $Id: ultra14f.c,v 1.15 1994/01/29 10:29:14 rgrimes Exp $
+ *      $Id: ultra14f.c,v 1.16 1994/03/20 00:30:04 wollman Exp $
  */
 
 #include <sys/types.h>
@@ -465,6 +465,7 @@ uha_attach(dev)
 	uha->sc_link.adapter_targ = uha->our_id;
 	uha->sc_link.adapter = &uha_switch;
 	uha->sc_link.device = &uha_dev;
+	uha->sc_link.flags = SDEV_BOUNCE;
 
 	/*
 	 * ask the adapter what subunits are present