diff --git a/src/modules/class-user/class-user.repository.ts b/src/modules/class-user/class-user.repository.ts
index 98f0ac4..363353c 100644
--- a/src/modules/class-user/class-user.repository.ts
+++ b/src/modules/class-user/class-user.repository.ts
@@ -1,6 +1,6 @@
 import { Injectable } from '@nestjs/common';
 import { PrismaService } from '@modules/prisma/prisma.service';
-import { ClassUser } from '@prisma/client';
+import { ClassUser, Role } from '@prisma/client';
 
 @Injectable()
 export class ClassUserRepository {
@@ -41,12 +41,18 @@ export class ClassUserRepository {
     return this.prisma.classUser.findMany({
       where: {
         c_id,
+        role: Role.USER,
       },
       skip: page && (page - 1) * limit,
       take: limit && limit,
       select: {
         u_id: true,
         nickname: true,
+        user: {
+          select: {
+            image: true,
+          },
+        },
       },
       orderBy: {
         u_id: 'asc',
diff --git a/src/modules/quiz-feedback/quiz-feedback.service.ts b/src/modules/quiz-feedback/quiz-feedback.service.ts
index e300e6c..ac1bbd7 100644
--- a/src/modules/quiz-feedback/quiz-feedback.service.ts
+++ b/src/modules/quiz-feedback/quiz-feedback.service.ts
@@ -34,6 +34,8 @@ export class QuizFeedbackService {
     if (!feedback) {
       throw new NotFoundException('Feedback not found');
     }
+
+    return feedback;
   }
 
   /**