private void boundsCheck() {
        if(announcerInterval <= 0) {
            announcerInterval = 15;
        }
        if(announcements == null) {
            announcements = new ArrayList<String>();
        }
        // Check default channel
        if(defaultChannel == null) {
            if(channels.isEmpty()) {
                // Create a default channel
                defaultChannel = new Channel("[def]", "Default", worldName);
                defaultChannel.setIncludeWorldPlayers(true);
                defaultChannel.setAutoJoin(true);
                channels.put("Default", defaultChannel);
            } else {
                // Choose first channel as default channel, if none was
                // specified
                defaultChannel = channels.values().toArray(new Channel[0])[0];
            }
            plugin.getModuleForClass(ChannelManager.class).registerChannel(
                    defaultChannel.getWorld() + defaultChannel.getName(),
                    defaultChannel);
        }
    }