diff --git a/sys/dev/atkbdc/psm.c b/sys/dev/atkbdc/psm.c
index a4270a94bd34..21c6e975bcc9 100644
--- a/sys/dev/atkbdc/psm.c
+++ b/sys/dev/atkbdc/psm.c
@@ -6334,6 +6334,16 @@ enable_synaptics_mux(struct psm_softc *sc, enum probearg arg)
 	/* IRQ handler does not support active multiplexing mode */
 	disable_aux_mux(kbdc);
 
+	if (!enable_aux_dev(kbdc) || !disable_aux_dev(kbdc)) {
+		/* MOUSE ERROR */
+		recover_from_error(sc->kbdc);
+//		if (ALWAYS_RESTORE_CONTROLLER(sc->kbdc))
+//			restore_controller(sc->kbdc, command_byte);
+		if (verbose)
+			printf("psm%d: failed to enable the aux device.\n",
+			    sc->unit);
+	}
+
 	return (probe);
 }