diff --git a/reference/strings/functions/str-rot13.xml b/reference/strings/functions/str-rot13.xml
index ddca69b197..382727da49 100644
--- a/reference/strings/functions/str-rot13.xml
+++ b/reference/strings/functions/str-rot13.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.3 $ -->
+<!-- $Revision: 1.4 $ -->
 <!-- splitted from ./en/functions/strings.xml, last change in rev 1.2 -->
   <refentry id='function.str-rot13'>
    <refnamediv>
@@ -22,7 +22,7 @@
     </para>
     <para>
      <example>
-      <title><function>rot13</function> example</title>
+      <title><function>str_rot13</function> example</title>
       <programlisting role="php">
 <![CDATA[
 <?php
@@ -34,6 +34,11 @@ echo str_rot13('PHP 4.3.0'); // CUC 4.3.0
       </programlisting>
      </example>
     </para>
+    <tip>
+     <para>
+      Use <function>str_rot13</function> twice to get even more security! ;-)
+     </para>
+    </tip>
     <note>
      <para>
       The behaviour of this function was buggy until PHP 4.3.0. Before