diff --git a/phpBB/config/default/container/services_twig.yml b/phpBB/config/default/container/services_twig.yml
index 6b54311f41..9ab004731e 100644
--- a/phpBB/config/default/container/services_twig.yml
+++ b/phpBB/config/default/container/services_twig.yml
@@ -6,6 +6,7 @@ services:
         class: phpbb\template\twig\environment
         arguments:
             - @config
+            - @filesystem
             - @path_helper
             - @service_container
             - %core.template.cache_path%
diff --git a/phpBB/includes/bbcode.php b/phpBB/includes/bbcode.php
index 53675637a0..150157e275 100644
--- a/phpBB/includes/bbcode.php
+++ b/phpBB/includes/bbcode.php
@@ -142,6 +142,7 @@ class bbcode
 				new \phpbb\template\context(),
 				new \phpbb\template\twig\environment(
 					$phpbb_container->get('config'),
+					$phpbb_container->get('filesystem'),
 					$phpbb_container->get('path_helper'),
 					$phpbb_container,
 					$phpbb_container->getParameter('core.root_path') . 'cache/',
diff --git a/phpBB/includes/functions_messenger.php b/phpBB/includes/functions_messenger.php
index b0861585ba..4cbe1eb425 100644
--- a/phpBB/includes/functions_messenger.php
+++ b/phpBB/includes/functions_messenger.php
@@ -637,6 +637,7 @@ class messenger
 			new \phpbb\template\context(),
 			new \phpbb\template\twig\environment(
 				$phpbb_container->get('config'),
+				$phpbb_container->get('filesystem'),
 				$phpbb_container->get('path_helper'),
 				$phpbb_container,
 				$phpbb_container->getParameter('core.root_path') . 'cache/',
diff --git a/phpBB/install/index.php b/phpBB/install/index.php
index df1229c9f2..657825ca39 100644
--- a/phpBB/install/index.php
+++ b/phpBB/install/index.php
@@ -280,6 +280,7 @@ $cache_path = $phpbb_root_path . 'cache/';
 
 $twig_environment = new \phpbb\template\twig\environment(
 	$config,
+	$phpbb_filesystem,
 	$phpbb_path_helper,
 	$phpbb_container,
 	$cache_path,
diff --git a/phpBB/phpbb/template/asset.php b/phpBB/phpbb/template/asset.php
index aa1689d71a..cb00f16549 100644
--- a/phpBB/phpbb/template/asset.php
+++ b/phpBB/phpbb/template/asset.php
@@ -20,15 +20,20 @@ class asset
 	/** @var \phpbb\path_helper **/
 	protected $path_helper;
 
+	/** @var \phpbb\filesystem\filesystem */
+	protected $filesystem;
+
 	/**
 	* Constructor
 	*
 	* @param string $url URL
 	* @param \phpbb\path_helper $path_helper Path helper object
+	* @param \phpbb\filesystem\filesystem $filesystem
 	*/
-	public function __construct($url, \phpbb\path_helper $path_helper)
+	public function __construct($url, \phpbb\path_helper $path_helper, \phpbb\filesystem\filesystem $filesystem)
 	{
 		$this->path_helper = $path_helper;
+		$this->filesystem = $filesystem;
 
 		$this->set_url($url);
 	}
@@ -153,7 +158,7 @@ class asset
 	public function set_path($path, $urlencode = false)
 	{
 		// Since 1.7.0 Twig returns the real path of the file. We need it to be relative.
-		$real_root_path = phpbb_realpath($this->path_helper->get_phpbb_root_path()) . DIRECTORY_SEPARATOR;
+		$real_root_path = $this->filesystem->realpath($this->path_helper->get_phpbb_root_path()) . DIRECTORY_SEPARATOR;
 
 		// If the asset is under the phpBB root path we need to remove its path and then prepend $phpbb_root_path
 		if ($real_root_path && substr($path . DIRECTORY_SEPARATOR, 0, strlen($real_root_path)) === $real_root_path)
@@ -163,7 +168,7 @@ class asset
 		else
 		{
 			// Else we make the path relative to the current working directory
-			$real_root_path = phpbb_realpath('.') . DIRECTORY_SEPARATOR;
+			$real_root_path = $this->filesystem->realpath('.') . DIRECTORY_SEPARATOR;
 			if ($real_root_path && substr($path . DIRECTORY_SEPARATOR, 0, strlen($real_root_path)) === $real_root_path)
 			{
 				$path = str_replace('\\', '/', substr($path, strlen($real_root_path)));
diff --git a/phpBB/phpbb/template/twig/environment.php b/phpBB/phpbb/template/twig/environment.php
index 0ba7a265e4..e7b8aeab89 100644
--- a/phpBB/phpbb/template/twig/environment.php
+++ b/phpBB/phpbb/template/twig/environment.php
@@ -18,6 +18,9 @@ class environment extends \Twig_Environment
 	/** @var \phpbb\config\config */
 	protected $phpbb_config;
 
+	/** @var \phpbb\filesystem\filesystem */
+	protected $filesystem;
+
 	/** @var \phpbb\path_helper */
 	protected $phpbb_path_helper;
 
@@ -40,6 +43,7 @@ class environment extends \Twig_Environment
 	* Constructor
 	*
 	* @param \phpbb\config\config $phpbb_config The phpBB configuration
+	* @param \phpbb\filesystem\filesystem $filesystem
 	* @param \phpbb\path_helper $path_helper phpBB path helper
 	* @param \Symfony\Component\DependencyInjection\ContainerInterface $container The dependency injection container
 	* @param string $cache_path The path to the cache directory
@@ -47,10 +51,11 @@ class environment extends \Twig_Environment
 	* @param \Twig_LoaderInterface $loader Twig loader interface
 	* @param array $options Array of options to pass to Twig
 	*/
-	public function __construct($phpbb_config, \phpbb\path_helper $path_helper, \Symfony\Component\DependencyInjection\ContainerInterface $container, $cache_path, \phpbb\extension\manager $extension_manager = null, \Twig_LoaderInterface $loader = null, $options = array())
+	public function __construct(\phpbb\config\config $phpbb_config, \phpbb\filesystem\filesystem $filesystem, \phpbb\path_helper $path_helper, \Symfony\Component\DependencyInjection\ContainerInterface $container, $cache_path, \phpbb\extension\manager $extension_manager = null, \Twig_LoaderInterface $loader = null, $options = array())
 	{
 		$this->phpbb_config = $phpbb_config;
 
+		$this->filesystem = $filesystem;
 		$this->phpbb_path_helper = $path_helper;
 		$this->extension_manager = $extension_manager;
 		$this->container = $container;
@@ -106,15 +111,25 @@ class environment extends \Twig_Environment
 	}
 
 	/**
-	* Get the phpBB root path
-	*
-	* @return string
-	*/
+	 * Get the phpBB root path
+	 *
+	 * @return string
+	 */
 	public function get_phpbb_root_path()
 	{
 		return $this->phpbb_root_path;
 	}
 
+	/**
+	* Get the filesystem object
+	*
+	* @return \phpbb\filesystem\filesystem
+	*/
+	public function get_filesystem()
+	{
+		return $this->filesystem;
+	}
+
 	/**
 	* Get the web root path
 	*
diff --git a/phpBB/phpbb/template/twig/node/includeasset.php b/phpBB/phpbb/template/twig/node/includeasset.php
index 15195a226b..324823b8d7 100644
--- a/phpBB/phpbb/template/twig/node/includeasset.php
+++ b/phpBB/phpbb/template/twig/node/includeasset.php
@@ -39,7 +39,7 @@ abstract class includeasset extends \Twig_Node
 			->write("\$asset_file = ")
 			->subcompile($this->getNode('expr'))
 			->raw(";\n")
-			->write("\$asset = new \phpbb\\template\\asset(\$asset_file, \$this->getEnvironment()->get_path_helper());\n")
+			->write("\$asset = new \phpbb\\template\\asset(\$asset_file, \$this->getEnvironment()->get_path_helper(), \$this->getEnvironment()->get_filesystem());\n")
 			->write("if (substr(\$asset_file, 0, 2) !== './' && \$asset->is_relative()) {\n")
 			->indent()
 				->write("\$asset_path = \$asset->get_path();")
diff --git a/tests/controller/common_helper_route.php b/tests/controller/common_helper_route.php
index 3e4b5fd38d..b01241e105 100644
--- a/tests/controller/common_helper_route.php
+++ b/tests/controller/common_helper_route.php
@@ -94,6 +94,7 @@ abstract class phpbb_controller_common_helper_route extends phpbb_test_case
 		$loader = new \phpbb\template\twig\loader($this->filesystem, '');
 		$twig = new \phpbb\template\twig\environment(
 			$this->config,
+			$this->filesystem,
 			$this->phpbb_path_helper,
 			$container,
 			$cache_path,
diff --git a/tests/extension/metadata_manager_test.php b/tests/extension/metadata_manager_test.php
index 101ab8616c..aaaee3b2e5 100644
--- a/tests/extension/metadata_manager_test.php
+++ b/tests/extension/metadata_manager_test.php
@@ -51,17 +51,19 @@ class phpbb_extension_metadata_manager_test extends phpbb_database_test_case
 		$cache_path = $this->phpbb_root_path . 'cache/twig';
 		$context = new \phpbb\template\context();
 		$loader = new \phpbb\template\twig\loader(new \phpbb\filesystem\filesystem(), '');
-		$phpbb_path_helper =new \phpbb\path_helper(
+		$filesystem = new \phpbb\filesystem\filesystem();
+		$phpbb_path_helper = new \phpbb\path_helper(
 			new \phpbb\symfony_request(
 				new phpbb_mock_request()
 			),
-			new \phpbb\filesystem\filesystem(),
+			$filesystem,
 			$this->getMock('\phpbb\request\request'),
 			$this->phpbb_root_path,
 			$this->phpEx
 		);
 		$twig = new \phpbb\template\twig\environment(
 			$this->config,
+			$filesystem,
 			$phpbb_path_helper,
 			$container,
 			$cache_path,
diff --git a/tests/template/asset_test.php b/tests/template/asset_test.php
index f84ea2e3ee..f6ce0fe241 100644
--- a/tests/template/asset_test.php
+++ b/tests/template/asset_test.php
@@ -41,7 +41,7 @@ class phpbb_template_asset_test extends phpbb_test_case
 		$path_helper->method('get_phpbb_root_path')
 			->willReturn($phpbb_root_path);
 
-		$asset = new asset('', $path_helper);
+		$asset = new asset('', $path_helper, new phpbb\filesystem\filesystem());
 
 		$asset->set_path($path, true);
 		$this->assertEquals($expected, $asset->get_path());
diff --git a/tests/template/template_allfolder_test.php b/tests/template/template_allfolder_test.php
index 63f35bc758..14a8e9d463 100644
--- a/tests/template/template_allfolder_test.php
+++ b/tests/template/template_allfolder_test.php
@@ -33,11 +33,13 @@ class phpbb_template_allfolder_test extends phpbb_template_template_test_case
 		$user = new \phpbb\user($lang, '\phpbb\datetime');
 		$this->user = $user;
 
+		$filesystem = new \phpbb\filesystem\filesystem();
+
 		$path_helper = new \phpbb\path_helper(
 			new \phpbb\symfony_request(
 				new phpbb_mock_request()
 			),
-			new \phpbb\filesystem\filesystem(),
+			$filesystem,
 			$this->getMock('\phpbb\request\request'),
 			$phpbb_root_path,
 			$phpEx
@@ -60,6 +62,7 @@ class phpbb_template_allfolder_test extends phpbb_template_template_test_case
 		$loader = new \phpbb\template\twig\loader(new \phpbb\filesystem\filesystem(), '');
 		$twig = new \phpbb\template\twig\environment(
 			$config,
+			$filesystem,
 			$path_helper,
 			$container,
 			$cache_path,
diff --git a/tests/template/template_events_test.php b/tests/template/template_events_test.php
index 6d1b7253e3..285e82188b 100644
--- a/tests/template/template_events_test.php
+++ b/tests/template/template_events_test.php
@@ -138,6 +138,8 @@ Zeta test event in all',
 		$this->extension_manager = new phpbb_mock_filesystem_extension_manager(
 			dirname(__FILE__) . "/datasets/$dataset/"
 		);
+
+		$filesystem = new \phpbb\filesystem\filesystem();
 		$path_helper = new \phpbb\path_helper(
 			new \phpbb\symfony_request(
 				new phpbb_mock_request()
@@ -154,6 +156,7 @@ Zeta test event in all',
 		$loader = new \phpbb\template\twig\loader(new \phpbb\filesystem\filesystem(), '');
 		$twig = new \phpbb\template\twig\environment(
 			$config,
+			$filesystem,
 			$path_helper,
 			$container,
 			$cache_path,
diff --git a/tests/template/template_includecss_test.php b/tests/template/template_includecss_test.php
index 7a73d1f888..8c398d992b 100644
--- a/tests/template/template_includecss_test.php
+++ b/tests/template/template_includecss_test.php
@@ -28,11 +28,13 @@ class phpbb_template_template_includecss_test extends phpbb_template_template_te
 		$defaults = $this->config_defaults();
 		$config = new \phpbb\config\config(array_merge($defaults, $new_config));
 
+		$filesystem = new \phpbb\filesystem\filesystem();
+
 		$this->phpbb_path_helper = new \phpbb\path_helper(
 			new \phpbb\symfony_request(
 				new phpbb_mock_request()
 			),
-			new \phpbb\filesystem\filesystem(),
+			$filesystem,
 			$this->getMock('\phpbb\request\request'),
 			$phpbb_root_path,
 			$phpEx
@@ -46,6 +48,7 @@ class phpbb_template_template_includecss_test extends phpbb_template_template_te
 		$loader = new \phpbb\template\twig\loader(new \phpbb\filesystem\filesystem(), '');
 		$twig = new \phpbb\template\twig\environment(
 			$config,
+			$filesystem,
 			$this->phpbb_path_helper,
 			$container,
 			$cache_path,
diff --git a/tests/template/template_test_case.php b/tests/template/template_test_case.php
index 7e2020ba09..b1826571af 100644
--- a/tests/template/template_test_case.php
+++ b/tests/template/template_test_case.php
@@ -82,11 +82,13 @@ class phpbb_template_template_test_case extends phpbb_test_case
 		$user = new \phpbb\user($lang, '\phpbb\datetime');
 		$this->user = $user;
 
+		$filesystem = new \phpbb\filesystem\filesystem();
+
 		$path_helper = new \phpbb\path_helper(
 			new \phpbb\symfony_request(
 				new phpbb_mock_request()
 			),
-			new \phpbb\filesystem\filesystem(),
+			$filesystem,
 			$this->getMock('\phpbb\request\request'),
 			$phpbb_root_path,
 			$phpEx
@@ -100,6 +102,7 @@ class phpbb_template_template_test_case extends phpbb_test_case
 		$loader = new \phpbb\template\twig\loader(new \phpbb\filesystem\filesystem(), '');
 		$twig = new \phpbb\template\twig\environment(
 			$config,
+			$filesystem,
 			$path_helper,
 			$container,
 			$cache_path,
diff --git a/tests/template/template_test_case_with_tree.php b/tests/template/template_test_case_with_tree.php
index eab83f379a..d0c49006fd 100644
--- a/tests/template/template_test_case_with_tree.php
+++ b/tests/template/template_test_case_with_tree.php
@@ -22,11 +22,13 @@ class phpbb_template_template_test_case_with_tree extends phpbb_template_templat
 		$defaults = $this->config_defaults();
 		$config = new \phpbb\config\config(array_merge($defaults, $new_config));
 
+		$filesystem = new \phpbb\filesystem\filesystem();
+
 		$this->phpbb_path_helper = new \phpbb\path_helper(
 			new \phpbb\symfony_request(
 				new phpbb_mock_request()
 			),
-			new \phpbb\filesystem\filesystem(),
+			$filesystem,
 			$this->getMock('\phpbb\request\request'),
 			$phpbb_root_path,
 			$phpEx
@@ -41,6 +43,7 @@ class phpbb_template_template_test_case_with_tree extends phpbb_template_templat
 		$loader = new \phpbb\template\twig\loader(new \phpbb\filesystem\filesystem(), '');
 		$twig = new \phpbb\template\twig\environment(
 			$config,
+			$filesystem,
 			$this->phpbb_path_helper,
 			$container,
 			$cache_path,