Doctrine 2 OneToOne Unidirectional不起作用

I have the following OneToOne relation inside MyEntity:

/**
 * @ORM\OneToOne(targetEntity="StatusHistory")
 * @ORM\JoinColumn(name="lastest_status_id", referencedColumnName="id")
 */
protected $lastestStatus;

The entity StatusHistory works. The migrations:diff command creates the files prefectly, and the database have the correct column.

The problem is, when I do die("c: " . $this->lastestStatus) inside MyEntity (trying to debug a getter), it returns Namespace\MyEntity rather than Namespace\StatusHistory.

What am I doing wrong?

Turns out I forgot to add the ->join('myEntity.lastestStatus', 'lastestStatus') clause on the query builder...