diff --git a/app/src/main/java/org/ntlab/irisclient/resources/RoomsRest.java b/app/src/main/java/org/ntlab/irisclient/resources/RoomsRest.java
index 18ee92e..aaa7c08 100644
--- a/app/src/main/java/org/ntlab/irisclient/resources/RoomsRest.java
+++ b/app/src/main/java/org/ntlab/irisclient/resources/RoomsRest.java
@@ -71,7 +71,7 @@
     //--------------------------------------------------
     //退出するメソッド
     @DELETE("rooms/{rid}/members/{nickname}")
-    Call<RoomJson> deleteMember(
+    Call<String> deleteMember(
             @Path("rid") String rid,
             @Path("nickname") String nickname
     );