diff --git a/backtester/statistics/stats.py b/backtester/statistics/stats.py
index 5f2dbfb..4ce207c 100644
--- a/backtester/statistics/stats.py
+++ b/backtester/statistics/stats.py
@@ -1,7 +1,7 @@
 import pandas as pd
 import numpy as np
 
-from ..enums import Order
+from ..enums import Order  # noqa: F401
 
 
 def summary(trade_log, balance):
diff --git a/setup.cfg b/setup.cfg
index db51413..0c7ac7a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [flake8]
 max-line-length = 119
-ignore = E126,F403,F405
+ignore = E126,F403,F405,W504
 
 [yapf]
 based_on_style = pep8