Group Problem

Erreur Reçue :
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An exception occurred while executing 'INSERT INTO group (name, role) VALUES (?, ?)' with params ["Pouet", "role_worker"]:

SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'group (name, role) VALUES ('Pouet', 'role_worker')' at line 1
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GroupController.php
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<?php
    /**
     * @Route("/workspace/group/create-group.html", name="createGroup")
     *
     * @Security("has_role('ROLE_ADMIN')")
     */
    public function createGroupAction(Request $request)
    {
        $group = new Group();
        $form  = $this->createForm(new GroupType(), $group);

        if($request->isMethod('POST')) {
            $form->handleRequest($request);
            if($form->isValid()) {
                $manager = $this->get('group_manager');
                $manager->save($group);

                $this->get('session')
                        ->getFlashBag()
                        ->add('success', 'Le nouveau Groupe à bien été créé et à '
                                . 'été sauvegardé dans la base de données :-)');

                return $this->redirect($this->generateUrl('readGroup', array(
                    'name' => $group->getName()
                )));
            } else {
                $this->get('session')
                        ->getFlashBag()
                        ->add('error', 'Le formulaire est incomplet !');
            }
        }

        return $this->render('CAFABundle:Group:createGroup.html.twig', array(
            'form' => $form->createView()
        ));
    }
?>
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La fonction save du Manager (elle fonctionne avec d'autre Controller):
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<?php
    public function save($entity) {
        $test = '$entity instanceof '.$this->entity;
        if($test) {
            $this->persistAndFlush($entity);
        } else {
            throw new \Symfony\Component\HttpKernel\Exception\NotFoundHttpException('Vous n\'avez pas fourni la bonne entité.');
        }
    }
?>