diff --git a/reference/mysqli/reference.xml b/reference/mysqli/reference.xml
index 555dd5e7da..779bea0dad 100644
--- a/reference/mysqli/reference.xml
+++ b/reference/mysqli/reference.xml
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='iso-8859-1'?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
  <reference id='ref.mysqli'>
   <title>Improved MySQL Extension</title>
   <titleabbrev>mysqli</titleabbrev>
@@ -16,6 +16,9 @@
      Documentation for MySQL can be found at <ulink
      url="&url.mysql.docs;">&url.mysql.docs;</ulink>.
     </para>
+    
+    &warn.experimental;
+    
    </section>
    
    <section id='mysqli.requirements'>