diff --git a/reference/http/functions/header.xml b/reference/http/functions/header.xml
index 76a3fe5b56..93fe32299e 100644
--- a/reference/http/functions/header.xml
+++ b/reference/http/functions/header.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.22 $ -->
+<!-- $Revision: 1.23 $ -->
 <!-- splitted from ./en/functions/http.xml, last change in rev 1.2 -->
   <refentry id="function.header">
    <refnamediv>
@@ -223,10 +223,10 @@ header('Location: http://www.example.com/');
 <![CDATA[
 <?php
 // We'll be outputting a PDF
-header("Content-type: application/pdf");
+header('Content-type: application/pdf');
 
 // It will be called downloaded.pdf
-header("Content-Disposition: attachment; filename=downloaded.pdf");
+header('Content-Disposition: attachment; filename="downloaded.pdf"');
 
 // The PDF source is in original.pdf
 readfile('original.pdf');