diff --git a/src/Symfony/Component/Yaml/Inline.php b/src/Symfony/Component/Yaml/Inline.php
index 14137f14b7..2109f08bb3 100644
--- a/src/Symfony/Component/Yaml/Inline.php
+++ b/src/Symfony/Component/Yaml/Inline.php
@@ -688,7 +688,7 @@ class Inline
 
     private static function isBinaryString($value)
     {
-        return !preg_match('//u', $value) || preg_match('/[^\x09-\x0d\x20-\xff]/', $value);
+        return !preg_match('//u', $value) || preg_match('/[^\x00\x07-\x0d\x1B\x20-\xff]/', $value);
     }
 
     /**