diff --git a/doc/examples/osmo-hnbgw/osmo-hnbgw.cfg b/doc/examples/osmo-hnbgw/osmo-hnbgw.cfg
index a683187..53b5508 100644
--- a/doc/examples/osmo-hnbgw/osmo-hnbgw.cfg
+++ b/doc/examples/osmo-hnbgw/osmo-hnbgw.cfg
@@ -25,6 +25,7 @@ hnbgw
   hnbap-allow-tmsi 1
  mgcp
   mgw remote-ip 127.0.0.1
+  mgw local-port 2729
   mgw remote-port 2427
   mgw reset-endpoint rtpbridge/*