diff --git a/backend/src/main/java/com/edufocus/edufocus/quiz/service/QuizSetService.java b/backend/src/main/java/com/edufocus/edufocus/quiz/service/QuizSetService.java
index 97e75d2..8a610cc 100644
--- a/backend/src/main/java/com/edufocus/edufocus/quiz/service/QuizSetService.java
+++ b/backend/src/main/java/com/edufocus/edufocus/quiz/service/QuizSetService.java
@@ -22,5 +22,5 @@ public interface QuizSetService {
 
     List<MyQuizSetResponse> findMyQuizSetResponses(long userId);
 
-    void updateQuizSetTested(long quizSetId, long userId, boolean tested);
+    void updateQuizSetTested(long quizSetId);
 }
diff --git a/backend/src/main/java/com/edufocus/edufocus/quiz/service/QuizSetServiceImpl.java b/backend/src/main/java/com/edufocus/edufocus/quiz/service/QuizSetServiceImpl.java
index a636f0c..07b68a3 100644
--- a/backend/src/main/java/com/edufocus/edufocus/quiz/service/QuizSetServiceImpl.java
+++ b/backend/src/main/java/com/edufocus/edufocus/quiz/service/QuizSetServiceImpl.java
@@ -99,15 +99,9 @@ public class QuizSetServiceImpl implements QuizSetService {
     }
 
     @Override
-    public void updateQuizSetTested(long quizSetId, long userId, boolean tested) {
+    public void updateQuizSetTested(long quizSetId) {
         QuizSet quizSet = quizSetRepository.findById(quizSetId).orElseThrow(NoSuchElementException::new);
-
-        User user = userRepository.findById(userId).orElseThrow(NoSuchElementException::new);
-
-        if (quizSet.getUser().getId() != user.getId()) {
-            throw new UnAuthorizedException();
-        }
-
+        
         quizSet.setTested(true);
         quizSetRepository.save(quizSet);
     }
diff --git a/backend/src/main/java/com/edufocus/edufocus/ws/controller/ChatController.java b/backend/src/main/java/com/edufocus/edufocus/ws/controller/ChatController.java
index 4e280b9..6f149f0 100644
--- a/backend/src/main/java/com/edufocus/edufocus/ws/controller/ChatController.java
+++ b/backend/src/main/java/com/edufocus/edufocus/ws/controller/ChatController.java
@@ -2,6 +2,7 @@ package com.edufocus.edufocus.ws.controller;
 
 
 import com.edufocus.edufocus.global.constant.RabbitMQConstant;
+import com.edufocus.edufocus.quiz.service.QuizSetService;
 import com.edufocus.edufocus.report.service.ReportService;
 import com.edufocus.edufocus.ws.entity.dto.MessageDto;
 import com.edufocus.edufocus.ws.entity.dto.QuizDto;
@@ -17,22 +18,25 @@ public class ChatController {
 
     RabbitTemplate rabbitTemplate;
     ReportService reportService;
+    QuizSetService quizSetService;
 
-    public ChatController(RabbitTemplate rabbitTemplate, ReportService reportService){
+    public ChatController(RabbitTemplate rabbitTemplate, ReportService reportService, QuizSetService quizSetService) {
         this.rabbitTemplate = rabbitTemplate;
         this.reportService = reportService;
+        this.quizSetService = quizSetService;
     }
 
     @MessageMapping("chat.message.{lectureId}")
-    public void sendMessage(@DestinationVariable long lectureId, MessageDto messageDto){
-       rabbitTemplate.convertAndSend(RabbitMQConstant.CHAT_EXCHANGE.getConstant(),
+    public void sendMessage(@DestinationVariable long lectureId, MessageDto messageDto) {
+        rabbitTemplate.convertAndSend(RabbitMQConstant.CHAT_EXCHANGE.getConstant(),
                 RabbitMQConstant.ROUTING_KEY_PREFIX.getConstant() + lectureId,
                 messageDto);
     }
 
     @MessageMapping("chat.quiz.{lectureId}")
-    public void quizStart(@DestinationVariable long lectureId, QuizDto quizDto){
+    public void quizStart(@DestinationVariable long lectureId, QuizDto quizDto) {
         UUID reportSetId = reportService.initReportSet(lectureId, quizDto.getQuizSetId());
+        quizSetService.updateQuizSetTested(quizDto.getQuizSetId());
 
         quizDto.setReportSetId(reportSetId);