diff --git a/src/main/java/com/example/springsecuritystudy/user/User.java b/src/main/java/com/example/springsecuritystudy/user/User.java
index 840c4a9..d46f899 100644
--- a/src/main/java/com/example/springsecuritystudy/user/User.java
+++ b/src/main/java/com/example/springsecuritystudy/user/User.java
@@ -39,6 +39,10 @@ public class User implements UserDetails {
 		return Collections.singleton((GrantedAuthority) () -> authority);
 	}
 
+	public Boolean isAdmin() {
+		return authority.equals("ROLE_ADMIN");
+	}
+
 	@Override
 	public boolean isAccountNonExpired() {
 		return true;