diff --git a/letsencrypt/le_util.py b/letsencrypt/le_util.py
index af8a56ef5..f8c911d99 100644
--- a/letsencrypt/le_util.py
+++ b/letsencrypt/le_util.py
@@ -69,6 +69,7 @@ def exe_exists(exe):
 
     return False
 
+
 def make_or_verify_dir(directory, mode=0o755, uid=0):
     """Make sure directory exists with proper permissions.