Почему не работает отношение one-to-many?

CREATE TABLE limits(
    id INT AUTO_INCREMENT NOT NULL,
    PRIMARY KEY(id)
) ENGINE = InnoDB;

CREATE TABLE limits_params(
    id INT AUTO_INCREMENT NOT NULL,
    limit_id INT DEFAULT NULL,
    PRIMARY KEY(id)
) ENGINE = InnoDB;
ALTER TABLE `limits_params` ADD CONSTRAINT fk_limit_id FOREIGN KEY (`limit_id`) REFERENCES `limits` (id)

/**
 * @ORM\Entity(repositoryClass="App\Repository\LimitsRepository")
 */
class Limits
{
    /**
     * @ORM\OneToMany(targetEntity="App\Entity\LimitParams", mappedBy="limit", cascade={"persist"})
     */
    private $params;

    public function __construct() {
        $this->params = new ArrayCollection();
    }

    public function getParams()
    {
        return $this->params;
    }
}

/**
 * @ORM\Entity(repositoryClass="App\Repository\LimitParamsRepository")
 * @ORM\Table(name="limits_params")
 */
class LimitParams
{
    /**
     * @ORM\ManyToOne(targetEntity="App\Entity\Limits", inversedBy="params", cascade={"persist"})
     * @ORM\JoinColumn(name="limit_id", referencedColumnName="id")
     */
    private $limit;
}