diff --git a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
index 2af04a0cf2..77f780127e 100644
--- a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
+++ b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
@@ -1731,7 +1731,7 @@ class FilesystemTest extends FilesystemTestCase
         file_put_contents($filename, 'FOO BAR');
         chmod($filename, 0745);
 
-        $this->filesystem->dumpFile($filename, 'bar', null);
+        $this->filesystem->dumpFile($filename, 'bar');
 
         $this->assertFilePermissions(745, $filename);
     }