diff --git a/reference/network/functions/ip2long.xml b/reference/network/functions/ip2long.xml
index eaf8dd9106..03437fc886 100644
--- a/reference/network/functions/ip2long.xml
+++ b/reference/network/functions/ip2long.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.12 $ -->
+<!-- $Revision: 1.13 $ -->
 <!-- splitted from ./en/functions/network.xml, last change in rev 1.18 -->
   <refentry id="function.ip2long">
    <refnamediv>
@@ -99,8 +99,8 @@ $ip = long2ip(ip2long("10.0.256")); // "10.0.1.0"
     </para>
     <note>
      <para>
-      <function>ip2long</function> will return <literal>-1</literal> for
-      the IP <literal>255.255.255.255</literal>
+      <function>ip2long</function> will return <literal>-1</literal> (PHP 4) or
+      &false; (PHP 5) for the IP <literal>255.255.255.255</literal>.
      </para>
     </note>
     <para>