diff --git a/tox.ini b/tox.ini
index ea2ae04d4..a73652da3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -44,7 +44,9 @@ commands =
 basepython = python3
 setenv = PYTHONHASHSEED=0
 deps = -r{toxinidir}/doc/requirements.txt
-commands = sphinx-build -W -b html doc/source doc/build/html
+commands =
+  rm -fr doc/build doc/source/api/ .autogenerated
+  sphinx-build -W -b html doc/source doc/build/html
 
 [testenv:api-ref]
 basepython = python3
diff --git a/watcher/hacking/checks.py b/watcher/hacking/checks.py
index bd8351146..4d880f512 100644
--- a/watcher/hacking/checks.py
+++ b/watcher/hacking/checks.py
@@ -91,6 +91,7 @@ def no_translate_debug_logs(logical_line, filename):
     we shouldn't translate debug level logs.
 
     * This check assumes that 'LOG' is a logger.
+
     N319
     """
     for hint in _all_hints: