title: WinHttp.WinHttpRequest adding to the content-type
body: <p>I'm trying to make a request to kigo's api using vba WinHttp.WinHttpRequest,
  i was able to send a request, but WinHttpRequest changes the content-type adding
  Charset=UTF-8 when it sends the request, with that kigo's api returns 415 error.</p>
  
  <p>I set the content-type like this</p>
  
  <pre><code>web_Http.SetRequestHeader "Content-Type", "application/json"
  </code></pre>
  
  <p>but when the i look at the request in Wireshark the content-type is like this</p>
  
  <pre><code>Content-Type: application/json; Charset=UTF-8
  </code></pre>
  
  <p>Any ideas?</p>
  
  <p>I found <a href="https://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/52fca0ca-858d-4c9a-9daa-e693a290f40d/how-do-i-prevent-winhttprequest-from-automatically-appending-charsetutf8-to-contenttype?forum=windowscompatibility" rel="noreferrer">this</a>, that is similar to my problem but i dont understand the solution.</p>