Custom Column on post, but not on custom post type

Okay, so i have a custom post type that is working fine. And i have a custom column on regular posts that is working fine. Problem is that the custom column is also showing up on the custom post type and i do not want that to happen… Here is the custom column code, what am i doing wrong?

/* Display custom column */
function display_posts_slider( $column, $post_id ) {
    if($column == "promo") {
    $post_custom=get_post_custom($post_id);
    if($post_custom["promo-image"][0]) echo '<img src="'.plugins_url('/images/tick.png', __FILE__).'">';
    }
}
add_action( 'manage_posts_custom_column' , 'display_posts_slider', 10, 2 );

/* Add custom column to post list */
function add_slider_column($columns) {
    return array('promo' => __('Promo Slider')) + $columns;

}
add_filter('manage_posts_columns' , 'add_slider_column');