diff --git a/src/Type/EntityTypeAbstractFactory.php b/src/Type/EntityTypeAbstractFactory.php
index 799fc51..ca1ca19 100644
--- a/src/Type/EntityTypeAbstractFactory.php
+++ b/src/Type/EntityTypeAbstractFactory.php
@@ -315,7 +315,7 @@ public function __invoke(ContainerInterface $container, $requestedName, array $o
         }
 
         $instance = new EntityType([
-            'name' => $requestedName . '_' . $options['hydrator_section'],
+            'name' => str_replace('\\', '_', $requestedName) . '__' . $options['hydrator_section'],
             'description' => 'testing description',
             'fields' => function () use ($fields, $references) {
                 foreach ($references as $referenceName => $resolve) {
diff --git a/test/GraphQL/UserTest.php b/test/GraphQL/UserTest.php
index 02f5277..94251ad 100644
--- a/test/GraphQL/UserTest.php
+++ b/test/GraphQL/UserTest.php
@@ -65,7 +65,7 @@ public function testPasswordFilter($schemaName, $context)
         $output = $result->toArray();
 
         $this->assertEquals(
-            'Cannot query field "password" on type "DbTest\Entity\User_' . $schemaName . '".',
+            'Cannot query field "password" on type "DbTest_Entity_User__' . $schemaName . '".',
             $output['errors'][0]['message']
         );
     }