404 Page PHP Notice

On 404 pages i get an error:

Notice: Trying to get property ‘post_title’ of non-object in /vagrant/content/plugins/pdf-print/pdf-print.php on line 785

Of course the post object isn’t present on 404 pages. Shouldn’t this be fixed (even in the free version)?

If it’s possible to fix by myself – with a hook or something – just let me know.

Thanks!