=== dev/usb/serial/usb_serial.c
==================================================================
--- dev/usb/serial/usb_serial.c	(revision 268010)
+++ dev/usb/serial/usb_serial.c	(local)
@@ -200,7 +200,7 @@
 
 	mtx_destroy(&ucom_mtx);
 }
-SYSUNINIT(ucom_uninit, SI_SUB_KLD - 2, SI_ORDER_ANY, ucom_uninit, NULL);
+SYSUNINIT(ucom_uninit, SI_SUB_KLD - 3, SI_ORDER_ANY, ucom_uninit, NULL);
 
 /*
  * Mark a unit number (the X in cuaUX) as in use.
=== dev/usb/serial/usb_serial.h
==================================================================
--- dev/usb/serial/usb_serial.h	(revision 268010)
+++ dev/usb/serial/usb_serial.h	(local)
@@ -195,7 +195,7 @@
 #define	UCOM_MTX_LOCK(sc) mtx_lock((sc)->sc_mtx)
 #define	UCOM_MTX_UNLOCK(sc) mtx_unlock((sc)->sc_mtx)
 #define	UCOM_UNLOAD_DRAIN(x) \
-SYSUNINIT(var, SI_SUB_KLD - 3, SI_ORDER_ANY, ucom_drain_all, 0)
+SYSUNINIT(var, SI_SUB_KLD - 2, SI_ORDER_ANY, ucom_drain_all, 0)
 
 #define	ucom_cfg_do_request(udev,com,req,ptr,flags,timo) \
     usbd_do_request_proc(udev,&(com)->sc_super->sc_tq,req,ptr,flags,NULL,timo)