diff --git a/app/src/main/java/com/example/tampopo_client/Tampopo.java b/app/src/main/java/com/example/tampopo_client/Tampopo.java
index 4708cbd..2c87afb 100644
--- a/app/src/main/java/com/example/tampopo_client/Tampopo.java
+++ b/app/src/main/java/com/example/tampopo_client/Tampopo.java
@@ -10,7 +10,7 @@
   private String token;
   private String userId;
   private String password;
-  private String chatroomId;
+  private Integer chatroomId;
   private String mailaddress;
   private String nickname;
   private String icon;
@@ -37,11 +37,11 @@
     this.password = password;
   }
 
-  public String getChatroomId() {
+  public Integer getChatroomId() {
     return chatroomId;
   }
 
-  public void setChatroomId(String ChatroomId) {
+  public void setChatroomId(Integer ChatroomId) {
     this.chatroomId = ChatroomId;
   }