function bbp_get_topic_last_reply_title( $topic_id = 0 ) {
		$topic_id = bbp_get_topic_id( $topic_id );
		$reply_id = bbp_get_topic_last_reply_id( $topic_id );
		$retval   = bbp_get_reply_title( $reply_id );

		// Misspelled. Use 'bbp_get_topic_last_reply_title' hook instead.
		$retval = apply_filters( 'bbp_get_topic_last_topic_title', $retval, $topic_id, $reply_id );

		// Filter & return
		return apply_filters( 'bbp_get_topic_last_reply_title', $retval, $topic_id, $reply_id );
	}