diff --git a/doc/en/nose.txt b/doc/en/nose.txt
index e72399bdd..0c1931a4d 100644
--- a/doc/en/nose.txt
+++ b/doc/en/nose.txt
@@ -12,6 +12,7 @@ Usage
 
 After :ref:`installation` type::
 
+    python setup.py develop  # make sure tests can import our package
     py.test  # instead of 'nosetests'
 
 and you should be able to run your nose style tests and