diff --git a/src/middlewares/logs.ts b/src/middlewares/logs.ts
index 8c992dd..461a13f 100644
--- a/src/middlewares/logs.ts
+++ b/src/middlewares/logs.ts
@@ -54,7 +54,7 @@ async function logMiddleware(req: Request, res: Response, next: NextFunction) {
       host: req.hostname,
       method: req.method,
       endpoint: req.url,
-      responseCode: res.statusCode === 304 ? 200 : res.statusCode,
+      responseCode: String(res.statusCode === 304 ? 200 : res.statusCode),
       responseDescription: data?.code,
       input: (level === 4 && JSON.stringify(req.body, null, 2)) || undefined,
       output: (level === 4 && JSON.stringify(data, null, 2)) || undefined,