elevator: Protect agoinst assertion.
elevator: Protect agoinst assertion.

superboy0712/realtime,superboy0712/realtime,superboy0712/realtime,vlstill/ttk4145,vlstill/ttk4145,vlstill/ttk4145,vlstill/ttk4145,superboy0712/realtime,superboy0712/realtime,vlstill/ttk4145,superboy0712/realtime,vlstill/ttk4145