Solution Layouts/BigLettersFolder, in ScriptLink ends as layouts/bigletterfolder, and return 404

In some VS Sharepoint solution I have set up as follow:

In mapped Layouts I have folder jQueryTest, and jquery.js in it.

I have Scirpt Element with Elements.xml with:

<?xml version="1.0" encoding="utf-8"?>
<Elements xmlns="http://ift.tt/sQmbje">
  <CustomAction Location="ScriptLink" Sequence="1" ScriptSrc="~site/_layouts/jQueryTest/jquery-1.11.1.min.js" />
</Elements>

But in the web broser console I get:

GET http://some_url_here/sites/some_site_here/_layouts/jquerytest/jquery-1.11.1.min.js [HTTP/1.1 404 Not Found 15ms]

Capital letters where lowercased. But IIS is CASE SENSITIVE. What can I do now?

PS Can someone add "case-sensitive" as tag on this stackexchange site? :)