diff --git a/tox.ini b/tox.ini
index b2930249..6d9541e3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,6 +16,7 @@ commands = python setup.py testr --slowest --testr-args='{posargs}'
 
 [testenv:pep8]
 commands =
+    python setup.py check --restructuredtext --strict
     flake8
     # Run doc8 to check .rst and .txt files.
     # HACKING.rst is the only file that is not referenced from