diff --git a/resources/extra-large-conference/prosody.cfg.lua.visitor.template b/resources/extra-large-conference/prosody.cfg.lua.visitor.template
index 162737d9f2..4ae60d8c1f 100644
--- a/resources/extra-large-conference/prosody.cfg.lua.visitor.template
+++ b/resources/extra-large-conference/prosody.cfg.lua.visitor.template
@@ -105,6 +105,7 @@ VirtualHost 'vX.meet.jitsi'
       'external_services';
       'smacks';
       'jiconop';
+      'conference_duration';
     }
     main_muc = 'conference.vX.meet.jitsi';
 
diff --git a/resources/prosody-plugins/mod_fmuc.lua b/resources/prosody-plugins/mod_fmuc.lua
index 177583ecb0..3004f20e36 100644
--- a/resources/prosody-plugins/mod_fmuc.lua
+++ b/resources/prosody-plugins/mod_fmuc.lua
@@ -526,6 +526,8 @@ local function iq_from_main_handler(event)
     -- if this is update it will either set or remove the password
     room:set_password(node.attr.password);
     room._data.meetingId = node.attr.meetingId;
+    local createdTimestamp = node.attr.createdTimestamp;
+    room.created_timestamp = createdTimestamp and tonumber(createdTimestamp) or nil;
 
     if node.attr.lobby == 'true' then
         room._main_room_lobby_enabled = true;
diff --git a/resources/prosody-plugins/mod_visitors.lua b/resources/prosody-plugins/mod_visitors.lua
index 3377f566ac..ba944ff702 100644
--- a/resources/prosody-plugins/mod_visitors.lua
+++ b/resources/prosody-plugins/mod_visitors.lua
@@ -67,7 +67,8 @@ local function send_visitors_iq(conference_service, room, type)
       :tag(type, { xmlns = 'jitsi:visitors',
         password = type ~= 'disconnect' and room:get_password() or '',
         lobby = room._data.lobbyroom and 'true' or 'false',
-        meetingId = room._data.meetingId
+        meetingId = room._data.meetingId,
+        createdTimestamp = room.created_timestamp and tostring(room.created_timestamp) or nil
       }):up();
 
       module:send(connect_done);