diff --git a/server/gameserver/roommgr.cc b/server/gameserver/roommgr.cc
index 26aaa319..dd23786d 100644
--- a/server/gameserver/roommgr.cc
+++ b/server/gameserver/roommgr.cc
@@ -110,7 +110,7 @@ void RoomMgr::_CMJoin(f8::MsgHdr& hdr, const cs::CMJoin& msg)
     }
     if (msg.proto_version() >= cs::ProtoVersion) {
         const mt::Map* map_meta = mt::Map::GetById(msg.mapid());
-        if (!map_meta) {
+        if (!map_meta || !map_meta->IsOpen()) {
             JoinErrorHandle(msg, 3, hdr.socket_handle);
             return;
         }