diff --git a/doc/manuals/osmomgw-usermanual.adoc b/doc/manuals/osmomgw-usermanual.adoc
index b0bc83d..0c26449 100644
--- a/doc/manuals/osmomgw-usermanual.adoc
+++ b/doc/manuals/osmomgw-usermanual.adoc
@@ -20,6 +20,8 @@
 
 include::{srcdir}/chapters/mgcp_extensions.adoc[]
 
+include::./common/chapters/osmux/osmux.adoc[]
+
 //include::{srcdir}/chapters/counters.adoc[]
 
 include::./common/chapters/port_numbers.adoc[]
@@ -29,5 +31,3 @@
 include::./common/chapters/glossary.adoc[]
 
 include::./common/chapters/gfdl.adoc[]
-
-