clean a little bug
clean a little bug

jbar/open-udc,Open-UDC/open-udc,Open-UDC/open-udc,jbar/open-udc,Open-UDC/open-udc,Open-UDC/open-udc,Open-UDC/open-udc,jbar/open-udc,Open-UDC/open-udc,Open-UDC/open-udc,jbar/open-udc