diff --git a/6thSeminar/springPractice/src/main/java/org/sopt/springPractice/auth/redis/service/TokenService.java b/6thSeminar/springPractice/src/main/java/org/sopt/springPractice/auth/redis/service/TokenService.java
index eb739ee..fe3f5e5 100644
--- a/6thSeminar/springPractice/src/main/java/org/sopt/springPractice/auth/redis/service/TokenService.java
+++ b/6thSeminar/springPractice/src/main/java/org/sopt/springPractice/auth/redis/service/TokenService.java
@@ -6,7 +6,6 @@
 import org.sopt.springPractice.auth.redis.service.dto.AccessTokenDTO;
 import org.sopt.springPractice.common.dto.ErrorMessage;
 import org.sopt.springPractice.common.jwt.JwtTokenProvider;
-import org.sopt.springPractice.common.jwt.JwtValidationType;
 import org.sopt.springPractice.exception.UnauthorizedException;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -21,17 +20,10 @@ public class TokenService {
     @Transactional
     public AccessTokenDTO reissueAccessToken(Long userId) {
         Token token = redisTokenRepository.findById(userId).orElseThrow(
-                () -> new UnauthorizedException(ErrorMessage.REFRESH_TOKEN_NOT_FOUND)
+                () -> new UnauthorizedException(ErrorMessage.MEMBER_NOT_FOUND)
         );
 
-        JwtValidationType validationType = jwtTokenProvider.validateToken(token.getRefreshToken());
-
-        if (validationType == JwtValidationType.EXPIRED_JWT_TOKEN) {
-            throw new UnauthorizedException(ErrorMessage.JWT_UNAUTHORIZED_EXCEPTION);
-        } else if (validationType != JwtValidationType.VALID_JWT) {
-            throw new UnauthorizedException(ErrorMessage.JWT_UNAUTHORIZED_EXCEPTION);
-        }
-
+        jwtTokenProvider.validateToken(token.getRefreshToken());
         String newAccessToken = jwtTokenProvider.newAccessToken(token.getRefreshToken());
 
         return AccessTokenDTO.of(newAccessToken);
diff --git a/6thSeminar/springPractice/src/main/java/org/sopt/springPractice/common/dto/ErrorMessage.java b/6thSeminar/springPractice/src/main/java/org/sopt/springPractice/common/dto/ErrorMessage.java
index 032447c..a3989ec 100644
--- a/6thSeminar/springPractice/src/main/java/org/sopt/springPractice/common/dto/ErrorMessage.java
+++ b/6thSeminar/springPractice/src/main/java/org/sopt/springPractice/common/dto/ErrorMessage.java
@@ -11,7 +11,7 @@ public enum ErrorMessage {
     MEMBER_NOT_FOUND(HttpStatus.NOT_FOUND.value(), "ID에 해당하는 사용자가 존재하지 않습니다."),
     BLOG_NOT_FOUND(HttpStatus.NOT_FOUND.value(), "ID에 해당하는 블로그가 존재하지 않습니다."),
     JWT_UNAUTHORIZED_EXCEPTION(HttpStatus.UNAUTHORIZED.value(), "사용자의 로그인 검증을 실패했습니다."),
-    REFRESH_TOKEN_NOT_FOUND(HttpStatus.NOT_FOUND.value(), "refresh token이 존재하지 않습니다.");
+    EXPIRED_JWT_TOKEN(HttpStatus.UNAUTHORIZED.value(), "만료된 refresh 토큰입니다.");
     private final int status;
     private final String message;
 }