diff --git a/tox.ini b/tox.ini
index 21d836e..63f667d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,7 +16,7 @@ deps = -r{toxinidir}/requirements.txt
 [testenv:pep8]
 basepython = python3
 deps = -r{toxinidir}/requirements.txt
-commands = flake8 {posargs} zaza
+commands = flake8 {posargs} zaza unit_tests
 
 [testenv:venv]
 commands = {posargs}