Error when resetting best score ever

Since I move server (new PHP / Mysql version?) I get this error while trying to remove best score ever on all games...

mySQL error: Incorrect integer value: '' for column 'bestmid' at row 1

I have been able to succesfully run the query manually by running it in phpmyadmin

UPDATE games_list SET bestscore='0',bestmid='0',besttime='0' WHERE gid IN

The 0 was missing. Which file should I update so I don't have to run the query manually in the future ?

--------------- Added [DATE]1415457361[/DATE] at [TIME]1415457361[/TIME] ---------------

Apache v2.4.10 (cgi-fcgi)
PHP 5.5.18
Version MySQL 5.6.21

[stangger5]

admincp/arcade.php

Look for:

PHP Code:

    // reset best result ever
    if ($IN['opt_resetbest']==1)
    {
        $db_string = $DB->compile_db_update_string( array (    'bestscore'   => '0', 'bestmid' => '', 'besttime' => '0' ) );
            $DB->query("UPDATE ibf_games_list SET ".$db_string." WHERE gid IN ".$cat_string);
    } 

change :

PHP Code:

'bestmid' => '0' 

[tarball]

Thanks! Is there any other known patch to do when updating PHP/mysql?