diff --git a/server/gameserver/batchsync.cc b/server/gameserver/batchsync.cc
index b052f459..9716def5 100644
--- a/server/gameserver/batchsync.cc
+++ b/server/gameserver/batchsync.cc
@@ -1,3 +1,8 @@
 #include "precompile.h"
 
 #include "batchsync.h"
+
+BatchSync::BatchSync(Room* room)
+{
+    room_ = room;
+}
diff --git a/server/gameserver/batchsync.h b/server/gameserver/batchsync.h
index b0020014..6a96570c 100644
--- a/server/gameserver/batchsync.h
+++ b/server/gameserver/batchsync.h
@@ -2,7 +2,10 @@
 
 class BatchSync
 {
-public:
-    Room* room = nullptr;
+ public:
+    BatchSync(Room* room);
+
+ private:
+    Room* room_ = nullptr;
 
 };
diff --git a/server/gameserver/room.cc b/server/gameserver/room.cc
index 53e5668a..8786a5e0 100644
--- a/server/gameserver/room.cc
+++ b/server/gameserver/room.cc
@@ -40,6 +40,7 @@
 #include "airdrop.h"
 #include "airraid.h"
 #include "sandtable.h"
+#include "batchsync.h"
 
 #include "mt/Param.h"
 #include "mt/Hero.h"
@@ -116,6 +117,7 @@ void Room::Init()
 
     air_drop_ = std::make_shared<AirDrop>(this);
     air_raid_ = std::make_shared<AirRaid>(this);
+    batch_sync_ = std::make_shared<BatchSync>(this);
 
     CreateSpawnPoints();
     CreateWorldObjects();