diff --git a/src/Symfony/Component/HttpFoundation/HeaderUtils.php b/src/Symfony/Component/HttpFoundation/HeaderUtils.php
index f9e7bdac74..637bc5be47 100644
--- a/src/Symfony/Component/HttpFoundation/HeaderUtils.php
+++ b/src/Symfony/Component/HttpFoundation/HeaderUtils.php
@@ -18,8 +18,8 @@ namespace Symfony\Component\HttpFoundation;
  */
 class HeaderUtils
 {
-    const DISPOSITION_ATTACHMENT = 'attachment';
-    const DISPOSITION_INLINE = 'inline';
+    public const DISPOSITION_ATTACHMENT = 'attachment';
+    public const DISPOSITION_INLINE = 'inline';
 
     /**
      * This class should not be instantiated.