diff --git a/README.md b/README.md
index 6287585..adba922 100644
--- a/README.md
+++ b/README.md
@@ -11,8 +11,8 @@ This is a very lightweight Speedtest implemented in Javascript, using XMLHttpReq
 Only modern browsers are supported (IE11, latest Edge, latest Chrome, latest Firefox, latest Safari)
 
 ## Requirements
- - A reasonably fast web server. PHP is optional but recommended (see doc.pdf for details)
- - Some way to generate garbage data (PHP script included, see doc.pdf for other solutions)
+ - A reasonably fast web server. PHP is optional but recommended (see doc.md for details)
+ - Some way to generate garbage data (PHP script included, see doc.md for other solutions)
  - Your server must accept large POST requests (up to 20 Megabytes), otherwise the upload test will fail
  - It's also better if your server does not use compression, but it's not mandatory