diff --git a/br/pkg/storage/s3.go b/br/pkg/storage/s3.go
index 5c5c03c911063..eaba8f43cf7ca 100644
--- a/br/pkg/storage/s3.go
+++ b/br/pkg/storage/s3.go
@@ -110,9 +110,8 @@ func (rs *S3Storage) CopyFrom(ctx context.Context, e ExternalStorage, spec CopyS
 		Key:        aws.String(rs.options.Prefix + spec.To),
 	}
 
-	// NOTE: Maybe check whether the Go SDK will handle 200 OK errors.
-	// https://repost.aws/knowledge-center/s3-resolve-200-internalerror
-	_, err := s.svc.CopyObjectWithContext(ctx, copyInput)
+	// We must use the client of the target region.
+	_, err := rs.svc.CopyObjectWithContext(ctx, copyInput)
 	return err
 }