diff --git a/src/main/java/com/example/springtest/demo/resources/UserRest.java b/src/main/java/com/example/springtest/demo/resources/UserRest.java
index 3f9ad5c..06f136e 100644
--- a/src/main/java/com/example/springtest/demo/resources/UserRest.java
+++ b/src/main/java/com/example/springtest/demo/resources/UserRest.java
@@ -45,7 +45,7 @@
     public Optional<User> getUser(@PathParam("uId") String uId) {
         Optional<User> user = userRepository.findById(uId);
 //        User user = users.get(uId);
-        if (user != null) {
+        if (user.isPresent()) {
             return user;    // JSONが返る
         } else { // uIdが無ければ
             throw new WebApplicationException(404);    // 404が返る