diff --git a/src/main/java/id/ac/ui/cs/advprog/tutorial0/service/StudentService.java b/src/main/java/id/ac/ui/cs/advprog/tutorial0/service/StudentService.java
index e6d77e0d11ff3d379a93613d3bb2d784494bdde9..c16b315f829f568e8d9b04c5b1ec6fae88cdad4b 100644
--- a/src/main/java/id/ac/ui/cs/advprog/tutorial0/service/StudentService.java
+++ b/src/main/java/id/ac/ui/cs/advprog/tutorial0/service/StudentService.java
@@ -1,9 +1,11 @@
 package id.ac.ui.cs.advprog.tutorial0.service;
 
 import id.ac.ui.cs.advprog.tutorial0.model.Student;
+import org.springframework.stereotype.Service;
 
 import java.util.List;
 
+@Service
 public interface StudentService {
     public Student create(Student student);
     public List<Student> findAll();
diff --git a/src/main/java/id/ac/ui/cs/advprog/tutorial0/service/StudentServiceImpl.java b/src/main/java/id/ac/ui/cs/advprog/tutorial0/service/StudentServiceImpl.java
index 44e820c9a87cb42da8cd7b2f6fc1e4f4bf1c6440..0c05dc2df3b7c87a088895cbe54ecb90c120bb68 100644
--- a/src/main/java/id/ac/ui/cs/advprog/tutorial0/service/StudentServiceImpl.java
+++ b/src/main/java/id/ac/ui/cs/advprog/tutorial0/service/StudentServiceImpl.java
@@ -11,7 +11,8 @@ import java.util.Iterator;
 import java.util.List;
 
 @Service
-public class StudentServiceImpl {
+public class StudentServiceImpl implements StudentService {
+
     @Autowired
     private StudentRepository studentRepository;