diff --git a/src/interfaces/http-error.ts b/src/interfaces/http-error.ts
index e9f34fd..e4820bc 100644
--- a/src/interfaces/http-error.ts
+++ b/src/interfaces/http-error.ts
@@ -1,29 +1,20 @@
 import HttpStatus from "./http-status";
 
-type DevMessage =
-  | "missing_or_invalid_parameter"
-  | "data_exists"
-  | "data_in_used"
-  | "no_permission"
-  | "unknown_url"
-  | "data_not_found"
-  | "unauthorized";
-
 class HttpError extends Error {
   /**
    * HTTP Status Code
    */
   status: HttpStatus;
   message: string;
-  devMessage?: DevMessage;
+  code?: string;
 
-  constructor(status: HttpStatus, message: string, devMessage?: DevMessage) {
+  constructor(status: HttpStatus, message: string, code?: string) {
     super(message);
 
     this.name = "HttpError";
     this.status = status;
     this.message = message;
-    this.devMessage = devMessage;
+    this.code = code;
   }
 }
 
diff --git a/src/middlewares/error.ts b/src/middlewares/error.ts
index d80ceb3..177e363 100644
--- a/src/middlewares/error.ts
+++ b/src/middlewares/error.ts
@@ -8,7 +8,7 @@ function error(error: Error, _req: Request, res: Response, _next: NextFunction)
     return res.status(error.status).json({
       status: error.status,
       message: error.message,
-      devMessage: error.devMessage,
+      code: error.code,
     });
   }
 
@@ -17,7 +17,7 @@ function error(error: Error, _req: Request, res: Response, _next: NextFunction)
       status: HttpStatus.UNPROCESSABLE_ENTITY,
       message: "Validation error(s).",
       detail: error.fields,
-      devMessage: "missing_or_invalid_parameter",
+      code: "validateError",
     });
   }
 
@@ -26,7 +26,7 @@ function error(error: Error, _req: Request, res: Response, _next: NextFunction)
   return res.status(HttpStatus.INTERNAL_SERVER_ERROR).json({
     status: HttpStatus.INTERNAL_SERVER_ERROR,
     message: error.message,
-    devMessage: "system_error",
+    code: "system_error",
   });
 }