diff --git a/src/main/java/org/websoso/WSSServer/service/UserService.java b/src/main/java/org/websoso/WSSServer/service/UserService.java
index 2f2432ed..1ee819dd 100644
--- a/src/main/java/org/websoso/WSSServer/service/UserService.java
+++ b/src/main/java/org/websoso/WSSServer/service/UserService.java
@@ -54,7 +54,7 @@ public NicknameValidation isNicknameAvailable(User user, String nickname) {
         checkIfAlreadySetOrThrow(user.getNickname(), nickname,
                 ALREADY_SET_NICKNAME, "nickname with given is already set");
         if (userRepository.existsByNickname(nickname)) {
-            NicknameValidation.of(false);
+            return NicknameValidation.of(false);
         }
 
         return NicknameValidation.of(true);