diff --git a/src/main/java/com/ntlab/irisserver/resources/TurnsRest.java b/src/main/java/com/ntlab/irisserver/resources/TurnsRest.java
index 56e797b..bb20516 100644
--- a/src/main/java/com/ntlab/irisserver/resources/TurnsRest.java
+++ b/src/main/java/com/ntlab/irisserver/resources/TurnsRest.java
@@ -19,6 +19,7 @@
 
     @GET //現在のターンの取得
     @Path("/{rid}/game/turns")
+    @Produces(MediaType.APPLICATION_JSON)
     public Integer getTurnNumber(@PathParam("rid") String rid) {
         RoomManager rm = RoomManager.getInstance();
         Room room = rm.getRoom(rid);
@@ -68,6 +69,7 @@
 
     @GET //ヒントを取得
     @Path("/{rid}/game/turns/{tno}/hint")
+    @Produces(MediaType.APPLICATION_JSON)
     public String getHint(@PathParam("rid") String rid, @PathParam("tno") int tno){
         RoomManager rm = RoomManager.getInstance();
         Room room = rm.getRoom(rid);
@@ -95,6 +97,7 @@
     // rooms/{rid}/game/turns/{tno}/max:
     @GET //Maxを取得
     @Path("/{rid}/game/turns/{tno}/max")
+    @Produces(MediaType.APPLICATION_JSON)
     public Integer getMax(@PathParam("rid") String rid, @PathParam("tno") int tno){
         RoomManager rm = RoomManager.getInstance();
         Room room = rm.getRoom(rid);