diff --git a/tox.ini b/tox.ini
index 087b79c0..3285be36 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,7 +14,7 @@ deps = -r{toxinidir}/test-requirements.txt
 commands = python setup.py testr --slowest --testr-args='{posargs}'
 
 [testenv:pep8]
-commands = flake8 {posargs}
+commands = pep8 {posargs}
 
 [testenv:venv]
 commands = {posargs}
@@ -28,7 +28,7 @@ commands = python setup.py build_sphinx
 [testenv:debug]
 commands = oslo_debug_helper {posargs}
 
-[flake8]
+[pep8]
 # E123, E125 skipped as they are invalid PEP-8.
 
 show-source = True