diff --git a/DependencyInjection/Compiler/AdapterCompilerPass.php b/DependencyInjection/Compiler/AdapterCompilerPass.php
index 8bc1f526..abbff5c0 100644
--- a/DependencyInjection/Compiler/AdapterCompilerPass.php
+++ b/DependencyInjection/Compiler/AdapterCompilerPass.php
@@ -32,7 +32,9 @@ public function process(ContainerBuilder $container)
         $definition = $container->getDefinition('sonata.core.model.adapter.chain');
 
         if ($container->has('doctrine')) {
-            $definition->addMethodCall('addAdapter', array(new Reference('sonata.core.model.adapter.doctrine_orm')));
+            if (class_exists('\Doctrine\ORM\Version')) {
+                $definition->addMethodCall('addAdapter', array(new Reference('sonata.core.model.adapter.doctrine_orm')));
+            }
         } else {
             $container->removeDefinition('sonata.core.model.adapter.doctrine_orm');
         }
@@ -43,4 +45,4 @@ public function process(ContainerBuilder $container)
             $container->removeDefinition('sonata.core.model.adapter.doctrine_phpcr');
         }
     }
-}
\ No newline at end of file
+}
diff --git a/Model/Adapter/DoctrinePHPCRAdapter.php b/Model/Adapter/DoctrinePHPCRAdapter.php
index ac64fae7..bf54e72f 100644
--- a/Model/Adapter/DoctrinePHPCRAdapter.php
+++ b/Model/Adapter/DoctrinePHPCRAdapter.php
@@ -44,7 +44,7 @@ public function getNormalizedIdentifier($document)
             return null;
         }
 
-        $manager = $this->registry->getManagerForClass($document);
+        $manager = $this->registry->getManagerForClass(ClassUtils::getClass($document));
 
         if (!$manager instanceof DocumentManager) {
             return null;
diff --git a/Tests/Model/Adapter/DoctrinePHPCRAdapterTest.php b/Tests/Model/Adapter/DoctrinePHPCRAdapterTest.php
index 65e9427d..4daefe68 100644
--- a/Tests/Model/Adapter/DoctrinePHPCRAdapterTest.php
+++ b/Tests/Model/Adapter/DoctrinePHPCRAdapterTest.php
@@ -99,8 +99,9 @@ public function testNormalizedIdentifierWithValidObject($data, $expected)
     public static function getFixtures()
     {
         return array(
-            array("/salut", "salut"),
-            array("/les-gens", "les-gens"),
+            array('/salut', 'salut'),
+            array('/les-gens', 'les-gens'),
+            array('/cms/media/53d00ace7b3a6', 'cms/media/53d00ace7b3a6'),
         );
     }
-}
\ No newline at end of file
+}
diff --git a/Twig/Extension/TemplateExtension.php b/Twig/Extension/TemplateExtension.php
index 050162cd..445a27cc 100644
--- a/Twig/Extension/TemplateExtension.php
+++ b/Twig/Extension/TemplateExtension.php
@@ -103,9 +103,10 @@ public function slugify($text)
      */
     public function getUrlsafeIdentifier($model)
     {
-        return $this->modelAdapter->getUrlsafeIdentifier($model);
-    }
-
+        $res = $this->modelAdapter->getUrlsafeIdentifier($model);
+        return $res;
+   }
+ 
     /**
      * {@inheritdoc}
      */