diff --git a/app/src/main/java/org/ntlab/irisclient/EnterRoomActivity.java b/app/src/main/java/org/ntlab/irisclient/EnterRoomActivity.java
index 6c9ef0b..3bcc1db 100644
--- a/app/src/main/java/org/ntlab/irisclient/EnterRoomActivity.java
+++ b/app/src/main/java/org/ntlab/irisclient/EnterRoomActivity.java
@@ -18,6 +18,7 @@
 import com.google.android.material.snackbar.Snackbar;
 
 import org.ntlab.irisclient.entities.MemberJson;
+import org.ntlab.irisclient.entities.RoomJson;
 import org.ntlab.irisclient.resources.RoomsRest;
 
 import java.util.List;
@@ -62,10 +63,10 @@
                     nicknameForm.setError("ニックネームを入力されていません");
                     roomIdForm.setError("部屋番号を入力されていません");
                 } else {
-                    Call<List<MemberJson>> call = roomsRest.postMembers(rid,name);
-                    call.enqueue(new Callback<List<MemberJson>>() {
+                    Call<RoomJson> call = roomsRest.postMembers(rid,name);
+                    call.enqueue(new Callback<RoomJson>() {
                         @Override
-                        public void onResponse(Call<List<MemberJson>> call, Response<List<MemberJson>> response) {
+                        public void onResponse(Call<RoomJson> call, Response<RoomJson> response) {
                             if(response.isSuccessful()){
                                 Intent intent = new Intent(EnterRoomActivity.this,MemberRoomActivity.class);
                                 startActivity(intent);
@@ -73,7 +74,7 @@
                         }
 
                         @Override
-                        public void onFailure(Call<List<MemberJson>> call, Throwable t) {
+                        public void onFailure(Call<RoomJson> call, Throwable t) {
 
                         }
                     });