diff --git a/app/src/main/java/org/ntlab/irisclient/resources/GameRest.java b/app/src/main/java/org/ntlab/irisclient/resources/GameRest.java
index df39819..5ef7a69 100644
--- a/app/src/main/java/org/ntlab/irisclient/resources/GameRest.java
+++ b/app/src/main/java/org/ntlab/irisclient/resources/GameRest.java
@@ -82,7 +82,7 @@
 
     //-----------------------------------------------
     @GET("rooms/{rid}/game/turns/{tno}/hint")
-    Call<String> getHint(
+    Call<ResponseBody> getHint(
             @Path("rid") String rid,
             @Path("tno") Integer tno
     );