diff --git a/gnocchiclient/shell.py b/gnocchiclient/shell.py
index ee8fb4b..f7cdf69 100644
--- a/gnocchiclient/shell.py
+++ b/gnocchiclient/shell.py
@@ -126,7 +126,7 @@ def build_option_parser(self, description, version):
         # assumes it is the default. It's not in that case, but since we can't
         # fix all the rc files of the world, workaround it here.
         if ("OS_PASSWORD" in os.environ and
-           "OS_AUTH_TYPE" not in os.environ):
+                "OS_AUTH_TYPE" not in os.environ):
             os.environ.set("OS_AUTH_TYPE", "password")
 
         loading.register_session_argparse_arguments(parser=parser)
diff --git a/tox.ini b/tox.ini
index 413fd1e..345458b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -46,7 +46,7 @@ commands =
 
 [flake8]
 show-source = True
-ignore = D100,D101,D102,D103,D104,D105,D107,A002,A003
+ignore = D100,D101,D102,D103,D104,D105,D107,A002,A003,W504
 exclude=.git,.tox,dist,doc,*egg,build
 enable-extensions=G
 application-import-names = gnocchiclient