Solved Nullpointer when clicking outside of inventory

I'm getting this really annoying nullpointer on this line:

Code:

if(event.getCurrentItem().getType() == Material.IRON_SWORD && event.getCurrentItem().getType() != null) {

Full event code:

Code:

    @EventHandler
    public void inventory(InventoryClickEvent event) {
        if(event.getInventory().getName() == "Minigames!") {
            event.setCancelled(true);
            Player player = (Player) event.getWhoClicked();
 
            if(event.getCurrentItem().getType() == Material.IRON_SWORD && event.getCurrentItem().getType() != null) {
                plugin.getServer().dispatchCommand(player, "go " + plugin.getConfig().getString("worlds.SG"));
                player.getWorld().playSound(player.getLocation(), Sound.ENDERMAN_TELEPORT, 5, 5);
                player.sendMessage(ChatColor.GREEN + "Teleported to Survival Games!");
            }
        }
    }

Any ideas how to fix this?

EDIT: Fixed with this:

Code:

if(event.getCurrentItem() != null && event.getCurrentItem().getType() != Material.AIR)

Nullpointer: http://pastebin.com/yUAqRiHe