laravel download excel file from s3 is not working

I am using laravel 5.1 I need to download excel from amazon s3 storage. I done all process correctly and if it is pdf format file means it downloading correctly but for excel file download it is downloading zip format. Can please anyone help me to fix this issue.

$filePath = "CIS/download/format/upload_format.xlsx";
if ( Storage::disk('s3')->has($filePath)) {
$file = Storage::disk('s3')->get($filePath);
$getMimeType = Storage::disk('s3')->getMimetype($filePath);
return Response::make($file, 200, [
'Content-Type' => $getMimeType,
'Content-Disposition' => 'attachement; 
filename:upload_format.xlsx',
]);
}

via Chebli Mohamed