diff --git a/src/Symfony/Component/Translation/Dumper/NullFileDumper.php b/src/Symfony/Component/Translation/Dumper/NullFileDumper.php
deleted file mode 100644
index e628e6ce6a..0000000000
--- a/src/Symfony/Component/Translation/Dumper/NullFileDumper.php
+++ /dev/null
@@ -1,38 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Translation\Dumper;
-
-use Symfony\Component\Translation\MessageCatalogue;
-
-/**
- * Null file dumper used for testing purposes.
- *
- * @author Florian Voutzinos <florian@voutzinos.com>
- */
-class NullFileDumper extends FileDumper
-{
-    /**
-     * {@inheritDoc}
-     */
-    protected function format(MessageCatalogue $messages, $domain)
-    {
-        return '';
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    protected function getExtension()
-    {
-        return 'null';
-    }
-}
diff --git a/src/Symfony/Component/Translation/Tests/Dumper/NullFileDumperTest.php b/src/Symfony/Component/Translation/Tests/Dumper/FileDumperTest.php
similarity index 71%
rename from src/Symfony/Component/Translation/Tests/Dumper/NullFileDumperTest.php
rename to src/Symfony/Component/Translation/Tests/Dumper/FileDumperTest.php
index 9394f54a16..7117d7c448 100644
--- a/src/Symfony/Component/Translation/Tests/Dumper/NullFileDumperTest.php
+++ b/src/Symfony/Component/Translation/Tests/Dumper/FileDumperTest.php
@@ -11,15 +11,15 @@
 
 namespace Symfony\Component\Translation\Tests\Dumper;
 
-use Symfony\Component\Translation\Dumper\NullFileDumper;
 use Symfony\Component\Translation\MessageCatalogue;
+use Symfony\Component\Translation\Dumper\FileDumper;
 
-class NullFileDumperTest extends \PHPUnit_Framework_TestCase
+class FileDumperTest extends \PHPUnit_Framework_TestCase
 {
     public function testDumpBackupsFileIfExisting()
     {
         $tempDir = sys_get_temp_dir();
-        $file = $tempDir.'/messages.en.null';
+        $file = $tempDir.'/messages.en.concrete';
         $backupFile = $file.'~';
 
         @touch($file);
@@ -27,7 +27,7 @@ class NullFileDumperTest extends \PHPUnit_Framework_TestCase
         $catalogue = new MessageCatalogue('en');
         $catalogue->add(array('foo' => 'bar'));
 
-        $dumper = new NullFileDumper();
+        $dumper = new ConcreteFileDumper();
         $dumper->dump($catalogue, array('path' => $tempDir));
 
         $this->assertTrue(file_exists($backupFile));
@@ -40,12 +40,12 @@ class NullFileDumperTest extends \PHPUnit_Framework_TestCase
     {
         $tempDir = sys_get_temp_dir();
         $translationsDir = $tempDir.'/test/translations';
-        $file = $translationsDir.'/messages.en.null';
+        $file = $translationsDir.'/messages.en.concrete';
 
         $catalogue = new MessageCatalogue('en');
         $catalogue->add(array('foo' => 'bar'));
 
-        $dumper = new NullFileDumper();
+        $dumper = new ConcreteFileDumper();
         $dumper->setRelativePathTemplate('test/translations/{domain}.{locale}.{extension}');
         $dumper->dump($catalogue, array('path' => $tempDir));
 
@@ -55,3 +55,16 @@ class NullFileDumperTest extends \PHPUnit_Framework_TestCase
         @rmdir($translationsDir);
     }
 }
+
+class ConcreteFileDumper extends FileDumper
+{
+    protected function format(MessageCatalogue $messages, $domain)
+    {
+        return '';
+    }
+
+    protected function getExtension()
+    {
+        return 'concrete';
+    }
+}