diff --git a/src/main/java/com/catchtable/global/common/ApiResponse.java b/src/main/java/com/catchtable/global/common/ApiResponse.java
index 2c0e62a..d1b24c5 100644
--- a/src/main/java/com/catchtable/global/common/ApiResponse.java
+++ b/src/main/java/com/catchtable/global/common/ApiResponse.java
@@ -9,26 +9,23 @@
 public class ApiResponse<T> {
 
     private int status;
+    private String code;
     private String message;
     private T data;
 
-    // 성공 (데이터 포함)
     public static <T> ApiResponse<T> success(SuccessCode code, T data) {
-        return new ApiResponse<>(code.getHttpStatus().value(), code.getMessage(), data);
+        return new ApiResponse<>(code.getHttpStatus().value(), code.getCode(), code.getMessage(), data);
     }
 
-    // 성공 (데이터 없음)
     public static ApiResponse<Void> success(SuccessCode code) {
-        return new ApiResponse<>(code.getHttpStatus().value(), code.getMessage(), null);
+        return new ApiResponse<>(code.getHttpStatus().value(), code.getCode(), code.getMessage(), null);
     }
 
-    // 실패 (데이터 없음)
     public static ApiResponse<Void> error(ErrorCode code) {
-        return new ApiResponse<>(code.getHttpStatus().value(), code.getMessage(), null);
+        return new ApiResponse<>(code.getHttpStatus().value(), code.getCode(), code.getMessage(), null);
     }
 
-    // 실패 (커스텀 메시지)
     public static ApiResponse<Void> error(ErrorCode code, String message) {
-        return new ApiResponse<>(code.getHttpStatus().value(), message, null);
+        return new ApiResponse<>(code.getHttpStatus().value(), code.getCode(), message, null);
     }
 }
diff --git a/src/main/java/com/catchtable/global/common/ResponseCode.java b/src/main/java/com/catchtable/global/common/ResponseCode.java
index 2ed2f53..d949ae0 100644
--- a/src/main/java/com/catchtable/global/common/ResponseCode.java
+++ b/src/main/java/com/catchtable/global/common/ResponseCode.java
@@ -5,4 +5,8 @@
 public interface ResponseCode {
     HttpStatus getHttpStatus();
     String getMessage();
+
+    default String getCode() {
+        return (this instanceof Enum<?> e) ? e.name() : getClass().getSimpleName();
+    }
 }
diff --git a/src/test/java/com/catchtable/loadtest/VacancyLoadTestTokenGenerator.java b/src/test/java/com/catchtable/loadtest/VacancyLoadTestTokenGenerator.java
index 1e96a86..67dee3c 100644
--- a/src/test/java/com/catchtable/loadtest/VacancyLoadTestTokenGenerator.java
+++ b/src/test/java/com/catchtable/loadtest/VacancyLoadTestTokenGenerator.java
@@ -53,11 +53,13 @@ void generateTokens() throws IOException {
 
         for (int i = 1; i <= userCount; i++) {
             String googleId = GOOGLE_ID_PREFIX + i;
+            String email = EMAIL_PREFIX + i + EMAIL_DOMAIN;
+            String nickname = NICKNAME_PREFIX + i;
             User user = userRepository.findByGoogleId(googleId)
                     .orElseGet(() -> userRepository.save(User.builder()
                             .googleId(googleId)
-                            .email(EMAIL_PREFIX + i + EMAIL_DOMAIN)
-                            .nickname(NICKNAME_PREFIX + i)
+                            .email(email)
+                            .nickname(nickname)
                             .profileImage(null)
                             .role(UserRole.USER)
                             .status(UserStatus.ACTIVE)