diff --git a/src/modules/msilo/doc/msilo_admin.xml b/src/modules/msilo/doc/msilo_admin.xml
index 1c4a0d0e06d..f9623891411 100644
--- a/src/modules/msilo/doc/msilo_admin.xml
+++ b/src/modules/msilo/doc/msilo_admin.xml
@@ -726,6 +726,27 @@ m_store(...);
 		</example>
 	</section>
 
+	<section id="msilo.p.use_mode">
+		<title><varname>use_mode</varname> (int)</title>
+		<para>
+		If set to 1, the call-id header of incoming MESSAGE is stored and reused
+		later for delivery MESSAGE.
+		</para>
+		<para>
+		<emphasis>
+			Default value is <quote>0</quote>.
+		</emphasis>
+		</para>
+		<example>
+		<title>Set the <quote>use_mode</quote> parameter</title>
+		<programlisting format="linespecific">
+...
+modparam("msilo", "use_mode", 1)
+...
+</programlisting>
+		</example>
+	</section>
+
 	</section>
 
 	<section>