diff --git a/src/main/java/org/ntlab/tampoposerver/resources/FriendsResource.java b/src/main/java/org/ntlab/tampoposerver/resources/FriendsResource.java
index 6dbd5ba..01502e8 100644
--- a/src/main/java/org/ntlab/tampoposerver/resources/FriendsResource.java
+++ b/src/main/java/org/ntlab/tampoposerver/resources/FriendsResource.java
@@ -46,7 +46,7 @@
     public void postFriends(@FormParam("token")String token,@FormParam("user0-id")String user0Id,@FormParam("user1-id")String user1Id){
         //400
         if (token.isBlank()){ //トークンが空文字だった時
-            var response = Response.status(Response.Status.NOT_FOUND).entity("不正なリクエストです。");
+            var response = Response.status(Response.Status.NOT_FOUND).entity("不正なリクエストです!");
             throw new WebApplicationException(response.build());
         }
         //401