diff --git a/ts/index.ts b/ts/index.ts
index b0b286e..15c9b92 100644
--- a/ts/index.ts
+++ b/ts/index.ts
@@ -24,8 +24,7 @@ export class Smarts3 {
       port: this.options.port || 3000,
       address: '0.0.0.0',
       silent: false,
-      directory: paths.bucketsDir,
-      allowMismatchedSignatures: true,
+      directory: paths.bucketsDir
     })
     await this.s3Instance.run();
     console.log('s3 server is running');