diff --git a/tools/flake8.ini b/tools/flake8.ini
index 9b745acccda817d..d25698dba7f3036 100644
--- a/tools/flake8.ini
+++ b/tools/flake8.ini
@@ -10,6 +10,7 @@ select = E,W,F,N
 # E303: too many blank lines (3)
 # E305: expected 2 blank lines after end of function or class
 # E402: module level import not at top of file
+# E501: line too long
 # E731: do not assign a lambda expression, use a def
 # W504: line break after binary operator
 # W601: .has_key() is deprecated, use ‘in’
@@ -17,7 +18,7 @@ select = E,W,F,N
 # N802: function name should be lowercase
 # N806: variable in function should be lowercase
 # N818: exception should be named with an Error suffix
-ignore = E128,E129,E226,E231,E251,E265,E302,E303,E305,E402,E731,W504,W601,N801,N802,N806,N818
+ignore = E128,E129,E226,E231,E251,E265,E302,E303,E305,E402,E501,E731,W504,W601,N801,N802,N806,N818
 exclude =
     .tox,
     third_party,
diff --git a/tools/tox.ini b/tools/tox.ini
index a4b747ac4fa1ac0..8dd27f9317264b6 100644
--- a/tools/tox.ini
+++ b/tools/tox.ini
@@ -15,7 +15,7 @@ changedir =
 
 commands =
   !flake8-!mypy: pytest --cov=tools --cov-report=term {posargs}
-  flake8: flake8 --append-config={toxinidir}/flake8.ini {posargs}
+  flake8: flake8 --append-config={toxinidir}/flake8.ini {toxinidir} {toxinidir}/../webdriver {posargs}
   mypy: mypy --config-file={toxinidir}/mypy.ini --explicit-package-bases tools
 
 passenv =