diff --git a/backend/src/v1/users/users.controller.ts b/backend/src/v1/users/users.controller.ts
index b7aec194..64b79250 100644
--- a/backend/src/v1/users/users.controller.ts
+++ b/backend/src/v1/users/users.controller.ts
@@ -76,8 +76,8 @@ export const create = async (req: Request, res: Response, next: NextFunction) =>
     if (!pwSchema.validate(String(password))) {
       return next(new ErrorResponse(errorCode.INVALIDATE_PASSWORD, status.BAD_REQUEST));
     }
-    await usersService.createUser(String(email), await bcrypt.hash(String(password), 10));
-    return res.status(status.OK).send(`${email} created!`);
+    const result = await usersService.createUser(String(email), await bcrypt.hash(String(password), 10));
+    return res.status(status.OK).send(`${result.email} created!`);
   } catch (error: any) {
     const errorNumber = parseInt(error.message, 10);
     if (errorNumber >= 200 && errorNumber < 300) {
diff --git a/backend/src/v1/users/users.repository.ts b/backend/src/v1/users/users.repository.ts
index a210982d..0c187f2b 100644
--- a/backend/src/v1/users/users.repository.ts
+++ b/backend/src/v1/users/users.repository.ts
@@ -9,6 +9,7 @@ import {
   UserReservation,
   User,
 } from '~/entity/entities';
+import { InsertResult } from "kysely";
 import * as models from '../DTO/users.model';
 
 export default class UsersRepository extends Repository<User> {
@@ -111,11 +112,12 @@ export default class UsersRepository extends Repository<User> {
   async insertUser(email: string, password: string) {
     const penaltyEndDate = new Date(0);
     penaltyEndDate.setDate(penaltyEndDate.getDate() - 1);
-    await this.insert({
+    const result = await this.save({
       email,
       password,
       penaltyEndDate: formatDate(penaltyEndDate),
     });
+    return result;
   }
 
   async updateUser(id: number, values: {}): Promise<models.User> {
diff --git a/backend/src/v1/users/users.service.ts b/backend/src/v1/users/users.service.ts
index ee4bdba6..1a2588a8 100644
--- a/backend/src/v1/users/users.service.ts
+++ b/backend/src/v1/users/users.service.ts
@@ -98,8 +98,8 @@ export default class UsersService {
     if (emailCount > 0) {
       throw new Error(errorCode.EMAIL_OVERLAP);
     }
-    await this.usersRepository.insertUser(email, password);
-    return null;
+    const result = await this.usersRepository.insertUser(email, password);
+    return result;
   }
 
   async updateUserEmail(id: number, email: string) {