diff --git a/phpBB/phpbb/storage/controller/controller.php b/phpBB/phpbb/storage/controller/controller.php
index e3b4cd4d18..4f1c407533 100644
--- a/phpBB/phpbb/storage/controller/controller.php
+++ b/phpBB/phpbb/storage/controller/controller.php
@@ -17,8 +17,8 @@ use phpbb\cache\service;
 use phpbb\db\driver\driver_interface;
 use phpbb\exception\http_exception;
 use phpbb\storage\storage;
-use phpbb\storage\streamed_response;
 use Symfony\Component\HttpFoundation\Request as symfony_request;
+use Symfony\Component\HttpFoundation\StreamedResponse;
 
 /**
  * Generic controller for storage
@@ -34,7 +34,7 @@ class controller
 	/** @var storage */
 	protected $storage;
 
-	/** @var streamed_response */
+	/** @var StreamedResponse */
 	protected $response;
 
 	/** @var symfony_request */
@@ -54,7 +54,7 @@ class controller
 		$this->db = $db;
 		$this->storage = $storage;
 		$this->symfony_request = $symfony_request;
-		$this->response = new streamed_response();
+		$this->response = new StreamedResponse();
 	}
 
 	/**
diff --git a/phpBB/phpbb/storage/streamed_response.php b/phpBB/phpbb/storage/streamed_response.php
deleted file mode 100644
index 2f62ced9eb..0000000000
--- a/phpBB/phpbb/storage/streamed_response.php
+++ /dev/null
@@ -1,31 +0,0 @@
-<?php
-/**
- *
- * This file is part of the phpBB Forum Software package.
- *
- * @copyright (c) phpBB Limited <https://www.phpbb.com>
- * @license GNU General Public License, version 2 (GPL-2.0)
- *
- * For full copyright and license information, please see
- * the docs/CREDITS.txt file.
- *
- */
-
-namespace phpbb\storage;
-
-use Symfony\Component\HttpFoundation\StreamedResponse;
-
-// Temporal fix for: https://github.com/symfony/symfony/issues/27924
-// Fixed 23/7/2018 in symfony v3.4.13
-class streamed_response extends StreamedResponse
-{
-	/**
-	 * {@inheritdoc}
-	 */
-	public function setNotModified()
-	{
-		$this->setCallback(function () {});
-
-		return parent::setNotModified();
-	}
-}