[jQuery] ajax .load() function appends a 0 to returned values

I just can't figure this one out, and it's got to be something silly,
since I can't find anyone else having the problem. My code looks like
this:

$('#edit' .postcontent').load('admin-ajax.php', {'action':'qe-
getpost'});

Everything works great - the returned value is loaded
into .postcontent perfectly. However, a 0 is appended to the end.
Every time. Even if I return nothing, a lonely 0 shows up
inside .postcontent. Can anyone explain what is going on?

Thanks!