diff --git a/docbook/auth-server-docs/reference/en/en-US/modules/application-clustering.xml b/docbook/auth-server-docs/reference/en/en-US/modules/application-clustering.xml
index c4246d2..5dab883 100644
--- a/docbook/auth-server-docs/reference/en/en-US/modules/application-clustering.xml
+++ b/docbook/auth-server-docs/reference/en/en-US/modules/application-clustering.xml
@@ -28,6 +28,14 @@
and his browser and hence can't rely on sticky sessions.
</para>
+ <note>
+ <para>
+ To enable distributable (replicated) HTTP Sessions in your application, you may need to do some additional steps. Usually you need to put <![CDATA[<distributable />]]>
+ tag into <literal>WEB-INF/web.xml</literal> file of your application and possibly do some additional steps to configure underlying cluster cache (In case of
+ Wildfly, the implementation of cluster cache is based on Infinispan). These steps are server specific, so consult documentation of your application server for more details.
+ </para>
+ </note>
+
<section id="stateless-token-store">
<title>Stateless token store</title>
<para>
