[Freeswitch-users] Session-expires overwrite in OK Response

When I send an INVITE to FS that contains a Session-Expires header, FS always overwrites it in the 200 OK response with this: Session-Expires: 120;refresher=uac How can I stop it? I saw that there is the sip-force-expires variable but I am not setting it anywhere. If I can't stop it from overwriting the value sent by the client, can I at least change 120 to a different value somewhere? Changing minimum-session-expires and session-timeout did not seem to help.