Query reversed when I use "category__not_in"

Question

When I use "category__not_in" it works - but the query is reversed.

$args = array (
   'post_type'        => array( 'post' ),
   'post_status'      => array( 'publish' ),
   'category__not_in' => array( 74, 77 ),
   'posts_per_page'   => '6',
   'paged'            => $paged
);

Maybe anyone had the same problem before and has a tipp? ("order" and "orderby" does not help)

EDIT: I misunderstood something, I have to use "post__not_in" instad ;)