diff --git a/phpBB/composer.lock b/phpBB/composer.lock
index 327c28bbea..6aac72b48f 100644
--- a/phpBB/composer.lock
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             "name": "symfony/browser-kit",
-            "version": "v3.1.5",
+            "version": "v3.1.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/browser-kit.git",
@@ -3099,7 +3100,7 @@
         },
         {
             "name": "symfony/css-selector",
-            "version": "v3.1.5",
+            "version": "v3.1.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/css-selector.git",
@@ -3152,16 +3153,16 @@
         },
         {
             "name": "symfony/dom-crawler",
-            "version": "v3.1.5",
+            "version": "v3.1.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/dom-crawler.git",
-                "reference": "bb7395e8b1db3654de82b9f35d019958276de4d7"
+                "reference": "59eee3c76eb89f21857798620ebdad7a05ad14f4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/dom-crawler/zipball/bb7395e8b1db3654de82b9f35d019958276de4d7",
-                "reference": "bb7395e8b1db3654de82b9f35d019958276de4d7",
+                "url": "https://api.github.com/repos/symfony/dom-crawler/zipball/59eee3c76eb89f21857798620ebdad7a05ad14f4",
+                "reference": "59eee3c76eb89f21857798620ebdad7a05ad14f4",
                 "shasum": ""
             },
             "require": {
@@ -3204,11 +3205,11 @@
             ],
             "description": "Symfony DomCrawler Component",
             "homepage": "https://symfony.com",
-            "time": "2016-08-05 08:37:39"
+            "time": "2016-10-18 15:46:07"
         },
         {
             "name": "symfony/process",
-            "version": "v3.1.5",
+            "version": "v3.1.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/process.git",
diff --git a/phpBB/phpbb/template/twig/lexer.php b/phpBB/phpbb/template/twig/lexer.php
index f1542109a4..de03aec04b 100644
--- a/phpBB/phpbb/template/twig/lexer.php
+++ b/phpBB/phpbb/template/twig/lexer.php
@@ -22,6 +22,11 @@ class lexer extends \Twig_Lexer
 
 	public function tokenize($code, $filename = null)
 	{
+		if ($code instanceof \Twig_Source)
+		{
+			$filename = $code->getName();
+			$code = $code->getCode();
+		}
 		// Our phpBB tags
 		// Commented out tokens are handled separately from the main replace
 		$phpbb_tags = array(
@@ -125,7 +130,7 @@ class lexer extends \Twig_Lexer
 		// Appends any filters
 		$code = preg_replace('#{([a-zA-Z0-9_\.]+)(\|[^}]+?)?}#', '{{ $1$2 }}', $code);
 
-		return parent::tokenize($code, $filename);
+		return parent::tokenize(new \Twig_Source($code, $filename));
 	}
 
 	/**