diff --git a/sys/dev/pccbb/pccbb.c b/sys/dev/pccbb/pccbb.c
index 861352e1648..008aa8a4ee7 100644
--- a/sys/dev/pccbb/pccbb.c
+++ b/sys/dev/pccbb/pccbb.c
@@ -499,6 +499,15 @@ cbb_event_thread(void *arg)
 		}
 		mtx_unlock(&Giant);
 
+		/*
+		 * First time through we need to tell mountroot that we're
+		 * done.
+		 */
+		if (sc->sc_root_token) {
+			root_mount_rel(sc->sc_root_token);
+			sc->sc_root_token = NULL;
+		}
+
 		/*
 		 * Wait until it has been 250ms since the last time we
 		 * get an interrupt.  We handle the rest of the interrupt
diff --git a/sys/dev/pccbb/pccbb_pci.c b/sys/dev/pccbb/pccbb_pci.c
index b8582b78fee..c89e5ad1f45 100644
--- a/sys/dev/pccbb/pccbb_pci.c
+++ b/sys/dev/pccbb/pccbb_pci.c
@@ -439,6 +439,7 @@ cbb_pci_attach(device_t brdev)
 		device_printf(brdev, "unable to create event thread.\n");
 		panic("cbb_create_event_thread");
 	}
+	sc->sc_root_token = root_mount_hold(device_get_nameunit(sc->dev));
 	return (0);
 err:
 	if (sc->irq_res)
diff --git a/sys/dev/pccbb/pccbbvar.h b/sys/dev/pccbb/pccbbvar.h
index a38e82e617d..64e0727c355 100644
--- a/sys/dev/pccbb/pccbbvar.h
+++ b/sys/dev/pccbb/pccbbvar.h
@@ -88,6 +88,7 @@ struct cbb_softc {
 	struct proc	*event_thread;
 	void (*chipinit)(struct cbb_softc *);
 	int	powerintr;
+	struct root_hold_token *sc_root_token;
 };
 
 /* result of detect_card */