diff --git a/developer_manual/app/testing.rst b/developer_manual/app/testing.rst
index 87f6a635e..0f16e88cc 100644
--- a/developer_manual/app/testing.rst
+++ b/developer_manual/app/testing.rst
@@ -4,7 +4,7 @@ Testing
 
 .. sectionauthor:: Bernhard Posselt <dev@bernhard-posselt.com>
 
-All PHP classes can be tested with `PHPUnit <http://phpunit.de/>`_, JavaScript can be tested by using `Karma <http://karma-runner.github.io/0.12/index.html>`_.
+All PHP classes can be tested with `PHPUnit <http://phpunit.de/>`_, JavaScript can be tested by using `Karma <http://karma-runner.github.io>`_.