function bp_get_message_notice_subject( $notice = null ) {
		global $messages_template;

		if ( ! isset( $notice->subject ) ) {
			$notice =& $messages_template->thread;
		}

		/**
		 * Filters the subject of the current notice in the loop.
		 *
		 * @since 1.0.0
		 *
		 * @param string $subject Subject of the current notice in the loop.
		 */
		return apply_filters( 'bp_get_message_notice_subject', $notice->subject );
	}