diff --git a/functions/http.xml b/functions/http.xml
index 336eb4f4cd..94c68552a0 100644
--- a/functions/http.xml
+++ b/functions/http.xml
@@ -60,7 +60,7 @@ exit;                 /* Make sure that code below does
      thing you do in your script should then be:
      <informalexample>
       <programlisting role="php">
-header ("http/1.0 404 Not Found");
+header ("HTTP/1.0 404 Not Found");
       </programlisting>
      </informalexample>
     </para>