diff --git a/src/backends/s3/create-s3-client.ts b/src/backends/s3/create-s3-client.ts
index a0bdb04..d2b18ed 100644
--- a/src/backends/s3/create-s3-client.ts
+++ b/src/backends/s3/create-s3-client.ts
@@ -32,9 +32,5 @@ export function createS3Client(uri: string): S3Client {
     process.env.AWS_ENDPOINT_URL_S3 ??
     process.env.AWS_ENDPOINT_URL;
 
-  if (config.endpoint) {
-    throw new Error(JSON.stringify(config));
-  }
-
   return new S3Client(config);
 }
diff --git a/src/backends/s3/mock-s3.test.ts b/src/backends/s3/mock-s3.test.ts
index cdb4cfb..e7088a0 100644
--- a/src/backends/s3/mock-s3.test.ts
+++ b/src/backends/s3/mock-s3.test.ts
@@ -9,14 +9,15 @@ import {
 } from 'bun:test';
 import { createS3Fs } from './s3';
 
-mock.module('./create-s3-client', () => {
-  const fn = jest.fn();
-  return { createS3Client: fn };
-});
-
 describe('s3Fs with mocked client', () => {
+
   let mockSend: jest.Mock;
+
   beforeEach(async () => {
+    mock.module('./create-s3-client', () => {
+      const fn = jest.fn();
+      return { createS3Client: fn };
+    });
     const { createS3Client } = await import('./create-s3-client');
     mockSend = jest.fn();
     (createS3Client as jest.Mock).mockReturnValue({