notification-bundle: Overriding entity doesn't work

Hello, I tried overriding the Notification entity following your guide:

<?php

namespace AppBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
use Mgilet\NotificationBundle\Entity\NotificationInterface;
use Mgilet\NotificationBundle\Model\Notification as NotificationModel;

/**
 * Notification
 *
 * @ORM\Entity(repositoryClass="AppBundle\Repository\NotificationRepository")
 */
class Notification extends NotificationModel implements NotificationInterface
{
    /**
     * @var string
     *
     * @ORM\Column(name="`type`", type="string", length=255)
     */
    private $type;

    /**
     * @var string|null
     *
     * @ORM\Column(name="sender", type="string", length=255, nullable=true)
     */
    private $sender;

    /**
     * Set type.
     *
     * @param string $type
     *
     * @return Notification
     */
    public function setType($type)
    {
        $this->type = $type;

        return $this;
    }

    /**
     * Get type.
     *
     * @return string
     */
    public function getType()
    {
        return $this->type;
    }

    /**
     * Set sender.
     *
     * @param string|null $sender
     *
     * @return Notification
     */
    public function setSender($sender = null)
    {
        $this->sender = $sender;

        return $this;
    }

    /**
     * Get sender.
     *
     * @return string|null
     */
    public function getSender()
    {
        return $this->sender;
    }
}

Unfortunately it’s not working as it tries to create the table twice:

mysite git:(master) ✗ sf doctrine:schema:update --dump-sql | highlight -l sql

In SchemaException.php line 108:
                                                                 
  The table with name 'mysite.notification' already exists.  
                                                                 

doctrine:schema:update [--complete] [--dump-sql] [-f|--force] [--em [EM]] [-h|--help] [-q|--quiet] [-v|vv|vvv|--verbose] [-V|--version] [--ansi] [--no-ansi] [-n|--no-interaction] [-e|--env ENV] [--no-debug] [--] <command>

Looking at the output it’s trying to execute the query twice. This is my config:

    orm:
        auto_generate_proxy_classes: '%kernel.debug%'
        naming_strategy: doctrine.orm.naming_strategy.underscore
        auto_mapping: true
        dql:
            numeric_functions:
                rand: DoctrineExtensions\Query\Mysql\Rand
                orm:
        resolve_target_entities:
            Mgilet\NotificationBundle\Entity\Notification: AppBundle\Entity\Notification

Thanks!