Problem increment field

$this->Word->updateAll(array('Word.count' => 'Word.count + 1'), array( 'Word.id' => $word['Word']['id']));

Database Error

Error: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'Word.word_id' in 'on clause'

SQL Query: UPDATE `dictionary2`.`words` AS `Word` LEFT JOIN `dictionary2`.`languages` AS `Language` ON (`Word`.`language_id` = `Language`.`id`) LEFT JOIN `dictionary2`.`flags` AS `Flag` ON (`Word`.`flag_id` = `Flag`.`id`) LEFT JOIN `dictionary2`.`users` AS `User` ON (`Word`.`word_id` = `User`.`id`) LEFT JOIN `dictionary2`.`sentiments` AS `Sentiment` ON (`Word`.`sentiment_id` = `Sentiment`.`id`) SET `Word`.`count` = `Words`.count + 1 WHERE `Word`.`id` = '54e6c25c-cef4-4e72-b764-10d400089a90'

Notice: If you want to customize this error message, create app\View\Errors\pdo_error.ctp

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