diff --git a/server/gameserver/mapmgr.cc b/server/gameserver/mapmgr.cc
index 8a30e4e..d3e9c1c 100644
--- a/server/gameserver/mapmgr.cc
+++ b/server/gameserver/mapmgr.cc
@@ -45,7 +45,11 @@ void MapMgr::AttachRoom(Room* room, RoomInitInfo& init_info)
             init_info.creator_proto_version == cs::ProtoVersion) {
             map_instance = GetMapInstance(4001);
         } else {
-            map_instance = GetMapInstance(3001);
+            if (init_info.creator_proto_version == cs::ProtoVersion) {
+                map_instance = GetMapInstance(4001);
+            } else {
+                map_instance = GetMapInstance(3001);
+            }
         }
     }
     if (!map_instance) {