Phorum Database Error

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Error:

Table './punkforum/phorum5_messages' is marked as crashed and should be repaired (145): SELECT count(*) FROM phorum5_messages WHERE forum_id = 1 AND thread = 676570 AND status =2 AND message_id <= 676594

Backtrace:

Function phorum_database_error called at
{path to Phorum}/include/db/mysql/mysqli.php:212
----
Function phorum_db_interact called at
{path to Phorum}/include/db/mysql.php:1532
----
Function phorum_db_get_message_index called at
{path to Phorum}/read.php:203
----