jquery: JQuery trying to parse a 204 No content response

When I do an Ajax request and the server return an 204 No content response JQuery (v1.11.3) try to parse the content and I get this error: JQMIGRATE: jQuery.parseJSON requires a valid JSON string (json = ""). I don’t know if it’s the cause but the response I got from the server does have:

Content-Length: 4
Content-Type: application/json

It’s an error from the server but HTTP spec say that a 204 code mean that there’s no content so JQuery mustn’t try to parse a 204 response.

Here’s how I was used JQuery:

$.ajax({
    url: 'myurl',                                                           
    type: 'DELETE',
    headers: {'Accept':'application/json'},                                              
});