diff --git a/docs/hacking.rst b/docs/hacking.rst
index e77aee0..08a1fe6 100644
--- a/docs/hacking.rst
+++ b/docs/hacking.rst
@@ -70,6 +70,10 @@ To run the tests::
 
 Write tests---tests are good!
 
+Also, it is good to run the tests for all the platforms supported and for pep8 compliant code. 
+You can do so by running tox::
+
+    $ tox
 
 Document!
 =========