diff --git a/src/main/java/com/ntlab/irisserver/entities/Room.java b/src/main/java/com/ntlab/irisserver/entities/Room.java
index ebdbd2b..11528f9 100644
--- a/src/main/java/com/ntlab/irisserver/entities/Room.java
+++ b/src/main/java/com/ntlab/irisserver/entities/Room.java
@@ -40,8 +40,10 @@
         public int gameTimerFirstThinkingTimes;
         //int gameTimerFirstThinkingTimes;
 
-
-
+        @JsonProperty("RedMaster")
+        private Member RedMaster;
+        @JsonProperty("BlueMaster")
+        private Member BlueMaster;
         Map<String,Member> members= new HashMap<>();
         Map<Integer, Drawing> drawings = new HashMap<>();
 
@@ -60,13 +62,8 @@
 
         }
 
+        //プレイヤーの情報を変更する
         public void changeTeamAndMaster(String nick, String belongs, boolean isMaster) {
-                //上に追加するもの
-                Member RedMaster = null;
-                Member BlueMaster = null;
-
-                //この関数のコメント
-                //プレイヤーの情報を変更する
 
                 //変更対象の情報を取得
                 Member m = members.get(nick);