diff --git a/src/auth/dtos/RequestValidation.response.dto.ts b/src/auth/dtos/RequestValidation.response.dto.ts
index 53c924b..86ed562 100644
--- a/src/auth/dtos/RequestValidation.response.dto.ts
+++ b/src/auth/dtos/RequestValidation.response.dto.ts
@@ -7,7 +7,7 @@ export class ResponseRequestValidationDto {
   phoneNumber: string;
 
   @ApiProperty({ description: '테스트용 인증번호', type: String })
-  @Expose()
+  @Exclude()
   validationNumber: string;
 
   @ApiProperty({ description: '이미 가입했는지에대한 정보', type: Boolean })