diff --git a/test/Media/Serialization/MediaObjectSerializerTest.php b/test/Media/Serialization/MediaObjectSerializerTest.php
index <HASH>..<HASH> 100644
--- a/test/Media/Serialization/MediaObjectSerializerTest.php
+++ b/test/Media/Serialization/MediaObjectSerializerTest.php
@@ -71,7 +71,7 @@ class MediaObjectSerializerTest extends \PHPUnit_Framework_TestCase
      */
     public function it_should_serialize_media_objects_with_application_octet_stream_mime_type()
     {
-        $mediaObject = new Image(
+        $mediaObject = MediaObject::create(
             new UUID('de305d54-75b4-431b-adb2-eb6b9e546014'),
             new MIMEType('application/octet-stream'),
             new Description('my pic'),
III-<I>: Fix existing unit test for serialization of media objects