diff --git a/arch/tests/univariate/test_variance_forecasting.py b/arch/tests/univariate/test_variance_forecasting.py
index 07fc237d5d..6715ad4abf 100644
--- a/arch/tests/univariate/test_variance_forecasting.py
+++ b/arch/tests/univariate/test_variance_forecasting.py
@@ -21,7 +21,6 @@
     from arch.univariate.recursions_python import garch_recursion
 
 
-
 def _compare_truncated_forecasts(full, trunc, start):
     assert np.all(np.isnan(trunc.forecasts[:start]))
     assert_allclose(trunc.forecasts[start:], full.forecasts[start:])
diff --git a/arch/tests/univariate/test_volatility.py b/arch/tests/univariate/test_volatility.py
index 6e23da4063..d6469aa066 100644
--- a/arch/tests/univariate/test_volatility.py
+++ b/arch/tests/univariate/test_volatility.py
@@ -23,7 +23,6 @@
     rec = recpy
 
 
-
 class TestVolatiltyProcesses(object):
     @classmethod
     def setup_class(cls):