diff --git a/letsencrypt/tests/display/util_test.py b/letsencrypt/tests/display/util_test.py
index 45025d7a0..adec265dc 100644
--- a/letsencrypt/tests/display/util_test.py
+++ b/letsencrypt/tests/display/util_test.py
@@ -285,6 +285,7 @@ class FileOutputDisplayTest(unittest.TestCase):
                     self.displayer._get_valid_int_ans(3),
                     (display_util.CANCEL, -1))
 
+
 class NoninteractiveDisplayTest(unittest.TestCase):
     """Test non-interactive display.