diff --git a/ClientTester/EchoClientTester/DummyService/DummyClients.cs b/ClientTester/EchoClientTester/DummyService/DummyClients.cs
index f37b2c9..af2b448 100644
--- a/ClientTester/EchoClientTester/DummyService/DummyClients.cs
+++ b/ClientTester/EchoClientTester/DummyService/DummyClients.cs
@@ -141,7 +141,7 @@ public class DummyClients
         {
             PlayerId = clientId,
             RotY = rotY,
-            Position = new Packet.Vector3
+            Position = new Packet.Position
             {
                 X = position.X,
                 Y = 0, // 높이는 버린다.
diff --git a/ClientTester/EchoClientTester/Packet/PacketBody.cs b/ClientTester/EchoClientTester/Packet/PacketBody.cs
index 638810a..f7b55d8 100644
--- a/ClientTester/EchoClientTester/Packet/PacketBody.cs
+++ b/ClientTester/EchoClientTester/Packet/PacketBody.cs
@@ -25,7 +25,7 @@ public class EchoPacket
 // ============================================================
 
 [ProtoContract]
-public class Vector3
+public class Position
 {
     [ProtoMember(1)]
     public float X
@@ -102,7 +102,7 @@ public class PlayerInfo
     }
 
     [ProtoMember(8)]
-    public Vector3 Position
+    public Position Position
     {
         get;
         set;
@@ -287,7 +287,7 @@ public class TransformPlayerPacket
     }
 
     [ProtoMember(2)]
-    public Vector3 Position
+    public Position Position
     {
         get;
         set;
@@ -399,7 +399,7 @@ public class TransformNpcPacket
     }
 
     [ProtoMember(2)]
-    public Vector3 Position
+    public Position Position
     {
         get;
         set;
diff --git a/ClientTester/EchoClientTester/StressTest/StressTestClient.cs b/ClientTester/EchoClientTester/StressTest/StressTestClient.cs
index 27b02be..854a250 100644
--- a/ClientTester/EchoClientTester/StressTest/StressTestClient.cs
+++ b/ClientTester/EchoClientTester/StressTest/StressTestClient.cs
@@ -152,7 +152,7 @@ public class StressTestClient
         {
             PlayerId = clientId,
             RotY = rotY,
-            Position = new Packet.Vector3 { X = position.X, Y = 0, Z = position.Z }
+            Position = new Packet.Position { X = position.X, Y = 0, Z = position.Z }
         };
         byte[] data = PacketSerializer.Serialize((ushort)PacketCode.TRANSFORM_PLAYER, pkt);
         writer.Put(data);
diff --git a/MMOTestServer/MMOserver/Game/GameServer.cs b/MMOTestServer/MMOserver/Game/GameServer.cs
index 0c00419..40ec37f 100644
--- a/MMOTestServer/MMOserver/Game/GameServer.cs
+++ b/MMOTestServer/MMOserver/Game/GameServer.cs
@@ -333,7 +333,7 @@ public class GameServer : ServerBase
             MaxHp = player.MaxHp,
             Mp = player.Mp,
             MaxMp = player.MaxMp,
-            Position = new Vector3 { X = player.PosX, Y = player.PosY, Z = player.PosZ },
+            Position = new Position { X = player.PosX, Y = player.PosY, Z = player.PosZ },
             RotY = player.RotY,
         };
     }
diff --git a/MMOTestServer/MMOserver/Packet/PacketBody.cs b/MMOTestServer/MMOserver/Packet/PacketBody.cs
index fe1a96c..0f668dd 100644
--- a/MMOTestServer/MMOserver/Packet/PacketBody.cs
+++ b/MMOTestServer/MMOserver/Packet/PacketBody.cs
@@ -25,7 +25,7 @@ public class EchoPacket
 // ============================================================
 
 [ProtoContract]
-public class Vector3
+public class Position
 {
     [ProtoMember(1)]
     public float X
@@ -102,7 +102,7 @@ public class PlayerInfo
     }
 
     [ProtoMember(8)]
-    public Vector3 Position
+    public Position Position
     {
         get;
         set;
@@ -287,7 +287,7 @@ public class TransformPlayerPacket
     }
 
     [ProtoMember(2)]
-    public Vector3 Position
+    public Position Position
     {
         get;
         set;
@@ -399,7 +399,7 @@ public class TransformNpcPacket
     }
 
     [ProtoMember(2)]
-    public Vector3 Position
+    public Position Position
     {
         get;
         set;