diff --git a/reference/strings/functions/str-rot13.xml b/reference/strings/functions/str-rot13.xml
index 382727da49..33e728eb51 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: 1.4 $ -->
+<!-- $Revision: 1.5 $ -->
 <!-- splitted from ./en/functions/strings.xml, last change in rev 1.2 -->
   <refentry id='function.str-rot13'>
    <refnamediv>
@@ -34,11 +34,6 @@ 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