diff --git a/Developer-Guide.md b/Developer-Guide.md
index 9dff8eb..65f61bb 100644
--- a/Developer-Guide.md
+++ b/Developer-Guide.md
@@ -162,7 +162,7 @@ in the browser (e.g. <http://localhost:8000/test/ol.html>), or run `./build.py
 test` on the console (headless testing with PhantomJS, make sure to install it
 first from http://phantomjs.org/download.html).
 
-See also the test-specific [README](test/README.md).
+See also the test-specific [README](../blob/master/test/README.md).
 
 If you get this error