diff --git a/reference/tidy/configure.xml b/reference/tidy/configure.xml
index e3d2127743..4c0f59ff1d 100644
--- a/reference/tidy/configure.xml
+++ b/reference/tidy/configure.xml
@@ -1,12 +1,17 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.3 $ -->
+<!-- $Revision: 1.4 $ -->
 <section id="tidy.installation">
  &reftitle.install;
  <para>
- Tidy is currently available for PHP 4.3.x and PHP 5 as a PECL
- extension from
- <ulink url="&url.pecl.package;tidy">&url.pecl.package;tidy</ulink>.
+  Tidy is currently available for PHP 4.3.x and PHP 5 as a PECL
+  extension from
+  <ulink url="&url.pecl.package;tidy">&url.pecl.package;tidy</ulink>.
  </para>
+ <note>
+  <para>
+   Tidy 1.0 is just for PHP 4.3.x, while Tidy 2.0 is just for PHP 5.
+  </para>
+ </note>
  <para>
   If <ulink url="&url.php.pear;">PEAR</ulink> is available on your *nix-like
   system you can use the pear installer to install the tidy extension, by the