diff --git a/src/Surfnet/StepupRa/RaBundle/Security/Authentication/Provider/SamlProvider.php b/src/Surfnet/StepupRa/RaBundle/Security/Authentication/Provider/SamlProvider.php
index ae085754..6e9587fc 100644
--- a/src/Surfnet/StepupRa/RaBundle/Security/Authentication/Provider/SamlProvider.php
+++ b/src/Surfnet/StepupRa/RaBundle/Security/Authentication/Provider/SamlProvider.php
@@ -21,15 +21,14 @@
 use Psr\Log\LoggerInterface;
 use Surfnet\SamlBundle\SAML2\Attribute\AttributeDictionary;
 use Surfnet\SamlBundle\SAML2\Response\AssertionAdapter;
-use Surfnet\StepupRa\RaBundle\Assert;
 use Surfnet\StepupRa\RaBundle\Exception\InconsistentStateException;
 use Surfnet\StepupRa\RaBundle\Exception\MissingRequiredAttributeException;
-use Surfnet\StepupRa\RaBundle\Exception\UserNotRaException;
 use Surfnet\StepupRa\RaBundle\Security\Authentication\Token\SamlToken;
 use Surfnet\StepupRa\RaBundle\Service\IdentityService;
 use Surfnet\StepupRa\RaBundle\Service\InstitutionConfigurationOptionsService;
 use Symfony\Component\Security\Core\Authentication\Provider\AuthenticationProviderInterface;
 use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
+use Symfony\Component\Security\Core\Exception\AccessDeniedException;
 use Symfony\Component\Security\Core\Exception\BadCredentialsException;
 
 class SamlProvider implements AuthenticationProviderInterface