diff --git a/logic/GameClass/GameObj/Map/Map.cs b/logic/GameClass/GameObj/Map/Map.cs
index 93f39da..775681a 100644
--- a/logic/GameClass/GameObj/Map/Map.cs
+++ b/logic/GameClass/GameObj/Map/Map.cs
@@ -21,7 +21,7 @@ namespace GameClass.GameObj
             uint value = Interlocked.Increment(ref numOfRepairedGenerators);
             if (value == GameData.numOfGeneratorRequiredForEmergencyExit)
             {
-                GameObjLockDict[GameObjType.EmergencyExit].EnterWriteLock();
+                GameObjLockDict[GameObjType.EmergencyExit].EnterReadLock();
                 try
                 {
                     Random r = new Random(Environment.TickCount);
@@ -31,13 +31,13 @@ namespace GameClass.GameObj
                 }
                 finally
                 {
-                    GameObjLockDict[GameObjType.EmergencyExit].ExitWriteLock();
+                    GameObjLockDict[GameObjType.EmergencyExit].ExitReadLock();
                 }
             }
             else
                   if (value == GameData.numOfGeneratorRequiredForRepair)
             {
-                GameObjLockDict[GameObjType.Doorway].EnterWriteLock();
+                GameObjLockDict[GameObjType.Doorway].EnterReadLock();
                 try
                 {
                     foreach (Doorway doorway in GameObjDict[GameObjType.Doorway])
@@ -45,7 +45,7 @@ namespace GameClass.GameObj
                 }
                 finally
                 {
-                    GameObjLockDict[GameObjType.Doorway].ExitWriteLock();
+                    GameObjLockDict[GameObjType.Doorway].ExitReadLock();
                 }
             }
         }
diff --git a/logic/Gaming/Game.cs b/logic/Gaming/Game.cs
index 0fe1706..04af9bd 100644
--- a/logic/Gaming/Game.cs
+++ b/logic/Gaming/Game.cs
@@ -281,7 +281,7 @@ namespace Gaming
         {
             if (!gameMap.Timer.IsGaming)
                 return;
-            gameMap.GameObjLockDict[GameObjType.Character].EnterWriteLock();
+            gameMap.GameObjLockDict[GameObjType.Character].EnterReadLock();
             try
             {
                 foreach (Character player in gameMap.GameObjDict[GameObjType.Character])
@@ -291,7 +291,7 @@ namespace Gaming
             }
             finally
             {
-                gameMap.GameObjLockDict[GameObjType.Character].ExitWriteLock();
+                gameMap.GameObjLockDict[GameObjType.Character].ExitReadLock();
             }
         }
 
diff --git a/logic/Gaming/PropManager.cs b/logic/Gaming/PropManager.cs
index 67e29f2..5127f64 100644
--- a/logic/Gaming/PropManager.cs
+++ b/logic/Gaming/PropManager.cs
@@ -142,7 +142,7 @@ namespace Gaming
                 int len = availableCellForGenerateProp.Count;
                 Random r = new Random(Environment.TickCount);
 
-                gameMap.GameObjLockDict[GameObjType.Chest].EnterWriteLock();
+                gameMap.GameObjLockDict[GameObjType.Chest].EnterReadLock();
                 try
                 {
                     int cou = 0;
@@ -181,7 +181,7 @@ namespace Gaming
                 }
                 finally
                 {
-                    gameMap.GameObjLockDict[GameObjType.Chest].ExitWriteLock();
+                    gameMap.GameObjLockDict[GameObjType.Chest].ExitReadLock();
                 }
                 /*
                 new Thread