diff --git a/src/Symfony/Bridge/Twig/Extension/CodeExtension.php b/src/Symfony/Bridge/Twig/Extension/CodeExtension.php
index 40809fb7b4..852bd3af84 100644
--- a/src/Symfony/Bridge/Twig/Extension/CodeExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/CodeExtension.php
@@ -137,7 +137,9 @@ class CodeExtension extends \Twig_Extension
     public function fileExcerpt($file, $line)
     {
         if (is_readable($file)) {
-            $code = highlight_file($file, true);
+            // highlight_file could throw warnings
+            // see https://bugs.php.net/bug.php?id=25725
+            $code = @highlight_file($file, true);
             // remove main code/span tags
             $code = preg_replace('#^<code.*?>\s*<span.*?>(.*)</span>\s*</code>#s', '\\1', $code);
             $content = preg_split('#<br />#', $code);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/CodeHelper.php b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/CodeHelper.php
index 3c031d2c5b..edbf7a878a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/CodeHelper.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/CodeHelper.php
@@ -131,7 +131,9 @@ class CodeHelper extends Helper
                 }
             }
 
-            $code = highlight_file($file, true);
+            // highlight_file could throw warnings
+            // see https://bugs.php.net/bug.php?id=25725
+            $code = @highlight_file($file, true);
             // remove main code/span tags
             $code = preg_replace('#^<code.*?>\s*<span.*?>(.*)</span>\s*</code>#s', '\\1', $code);
             $content = preg_split('#<br />#', $code);