diff --git a/install/fpm/configuration.xml b/install/fpm/configuration.xml
index 88588379c5..77f731ddde 100644
--- a/install/fpm/configuration.xml
+++ b/install/fpm/configuration.xml
@@ -213,12 +213,18 @@
       <listitem>
        <para>
         Choose how the process manager will control the number of child
-        processes. Possible values: <literal>static</literal>, <literal>dynamic</literal>. 
+        processes. Possible values: <literal>static</literal>, <literal>ondemand</literal>,
+        <literal>dynamic</literal>. 
         This option is mandatory.
        </para>
        <para>
         <literal>static</literal> - the number of child processes is fixed (<literal>pm.max_children</literal>).
        </para>
+       <para>
+        <literal>ondemand</literal> - the processes spawn on demand (when requested,
+        as opposed to dynamic, where <literal>pm.start_servers</literal> are started
+        when the service is started.
+       </para>
        <para>
         <literal>dynamic</literal> - the number of child processes is set dynamically based on the
         following directives: <literal>pm.max_children</literal>, <literal>pm.start_servers</literal>,