diff --git a/src/main/java/demo/api/jwt/JwtTokenFilter.java b/src/main/java/demo/api/jwt/JwtTokenFilter.java
index 446078e..e67baca 100644
--- a/src/main/java/demo/api/jwt/JwtTokenFilter.java
+++ b/src/main/java/demo/api/jwt/JwtTokenFilter.java
@@ -30,9 +30,9 @@ public class JwtTokenFilter extends OncePerRequestFilter {
         Authentication auth = jwtTokenProvider.getAuthentication(token);
         SecurityContextHolder.getContext().setAuthentication(auth); // 정상 토큰이면 SecurityContext에 저장
       }
-    } catch (CustomException ex) {
+    } catch (CustomException e) {
       SecurityContextHolder.clearContext();
-      response.sendError(ex.getHttpStatus().value(), ex.getMessage());
+      response.sendError(e.getHttpStatus().value(), e.getMessage());
       return;
     }
 
diff --git a/src/main/java/demo/api/user/UserServiceImpl.java b/src/main/java/demo/api/user/UserServiceImpl.java
index 7e48e49..8baacb8 100644
--- a/src/main/java/demo/api/user/UserServiceImpl.java
+++ b/src/main/java/demo/api/user/UserServiceImpl.java
@@ -6,9 +6,6 @@ import java.util.List;
 import java.util.Optional;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.security.core.Authentication;
-import org.springframework.security.core.context.SecurityContextHolder;
-import org.springframework.security.core.userdetails.UserDetails;
 import org.springframework.stereotype.Service;
 
 @Slf4j