diff --git a/server/gameserver/room.cc b/server/gameserver/room.cc
index 32843ba..14e1631 100644
--- a/server/gameserver/room.cc
+++ b/server/gameserver/room.cc
@@ -24,6 +24,8 @@
 #include "gamelog.h"
 #include "typeconvert.h"
 
+const int MAP_CELL_WIDTH = 64 * 8;
+const int MAP_GRID_WIDTH = 64;
 const int ROOM_MAX_PLAYER_NUM = 50;
 
 static long long RoomXGetTickCount(void* context)
@@ -39,19 +41,21 @@ Room::~Room()
 
 void Room::Init()
 {
-const int MAP_HEIGHT = 8192;
-const int MAP_WIDTH = 8192;
-const int MAP_CELL_WIDTH = 64 * 8;
-const int MAP_GRID_WIDTH = 64;
- #if 1
- ((metatable::Map*)map_meta->i)->set_map_width(MAP_WIDTH);
- ((metatable::Map*)map_meta->i)->set_map_height(MAP_HEIGHT);
- #endif
+    if (map_meta->i->map_width() < 1) {
+        abort();
+    }
+    if (map_meta->i->map_height() < 1) {
+        abort();
+    }
 
     xtimer.Init(RoomXGetTickCount, this, 100, 100);
     xtimer_attacher.xtimer = &xtimer;
-    grid_service.Init(MAP_WIDTH, MAP_HEIGHT, MAP_CELL_WIDTH);
-    map_service.Init(MAP_WIDTH / MAP_GRID_WIDTH, MAP_HEIGHT / MAP_GRID_WIDTH, MAP_GRID_WIDTH);
+    grid_service.Init(map_meta->i->map_width(),
+                      map_meta->i->map_height(),
+                      MAP_CELL_WIDTH);
+    map_service.Init(map_meta->i->map_width() / MAP_GRID_WIDTH,
+                     map_meta->i->map_height() / MAP_GRID_WIDTH,
+                     MAP_GRID_WIDTH);
 
     CreateThings();
     if (App::Instance()->HasFlag(1)) {