title: How to get IE9 to set content type when uploading directly to S3
body: <p>When using version 4.0.3 uploading directly to AWS S3, uploads sent through IE9 will have the content type set to binary/octet-stream rather than the actual content type of the file uploaded.  </p>
  
  <p>This does not occur in Firefox/Chrome (haven't tested safari).</p>
  
  <p>What is the trick to getting the content type set on IE9 (or below).</p>