diff --git a/src/main/java/com/ntlab/irisserver/entities/GameJson.java b/src/main/java/com/ntlab/irisserver/entities/GameJson.java
index e3deedd..5e7fa31 100644
--- a/src/main/java/com/ntlab/irisserver/entities/GameJson.java
+++ b/src/main/java/com/ntlab/irisserver/entities/GameJson.java
@@ -9,11 +9,11 @@
 
 public class GameJson {
     @JsonProperty("drawingList")
-    private Map<Integer, Drawing> drawingList = new HashMap<>();//<dno, drawingのURL>
+    private Map<Integer, Drawing> drawingList; //<dno, drawingのURL>
     @JsonProperty("map")
-    private List<Integer> map = new ArrayList<>();//cno順にdnoを管理
+    private List<Integer> map ; //cno順にdnoを管理
     @JsonProperty("colorList")
-    private List<String> colorList = new ArrayList<>();//cno順にr,g,b,dを管理
+    private List<String> colorList ; //cno順にr,g,b,dを管理
 
     //コンストラクタ
     public GameJson(Game g){