diff --git a/DependencyInjection/AbstractDoctrineExtension.php b/DependencyInjection/AbstractDoctrineExtension.php
index 211992d1..51c22073 100644
--- a/DependencyInjection/AbstractDoctrineExtension.php
+++ b/DependencyInjection/AbstractDoctrineExtension.php
@@ -227,8 +227,8 @@ protected function assertValidMappingConfiguration(array $mappingConfig, string
             throw new \InvalidArgumentException(sprintf('Specified non-existing directory "%s" as Doctrine mapping source.', $mappingConfig['dir']));
         }
 
-        if (!\in_array($mappingConfig['type'], ['xml', 'yml', 'annotation', 'php', 'staticphp'])) {
-            throw new \InvalidArgumentException(sprintf('Can only configure "xml", "yml", "annotation", "php" or "staticphp" through the DoctrineBundle. Use your own bundle to configure other metadata drivers. You can register them by adding a new driver to the "%s" service definition.', $this->getObjectManagerElementName($objectManagerName.'_metadata_driver')));
+        if (!\in_array($mappingConfig['type'], ['xml', 'yml', 'annotation', 'php', 'staticphp', 'attribute'])) {
+            throw new \InvalidArgumentException(sprintf('Can only configure "xml", "yml", "annotation", "php" or "staticphp", "attribute" through the DoctrineBundle. Use your own bundle to configure other metadata drivers. You can register them by adding a new driver to the "%s" service definition.', $this->getObjectManagerElementName($objectManagerName.'_metadata_driver')));
         }
     }