def fix_timestamp(timestamp):
    """
    Fix timestamp values, due to a len issue when posting them to Zipkin.

    :param timestamp: The unix timestamp format.
    """
    default_timestamp_len = 16
    if len(str(timestamp)) < default_timestamp_len:
        miss_len = default_timestamp_len - len(str(timestamp))
        timestamp = str(timestamp) + ''.join(['0' for _ in range(miss_len)])
        return int(timestamp)
    return timestamp