diff --git a/qubes/firewall.py b/qubes/firewall.py
index 61b511b1..dde01403 100644
--- a/qubes/firewall.py
+++ b/qubes/firewall.py
@@ -25,9 +25,9 @@ import datetime
 import subprocess
 
 import itertools
-import lxml.etree
 import os
 import socket
+import lxml.etree
 
 import qubes
 import qubes.vm.qubesvm