styles add-on correction

function my_em_style_conditions($conditions, $args){
    global $wpdb;
    if( !empty($args['style']) ){
        $conditions['style'] = $wpdb->prepare("(event_id IN (SELECT object_id FROM ".EM_META_TABLE." WHERE meta_key='event-style' AND meta_value='%s'))", $args['style']);
    }
    return $conditions;
}
add_filter( 'em_events_build_sql_conditions', 'my_em_style_conditions',1,2);