diff --git a/qubesroutingmanager/test_firewalling.py b/qubesroutingmanager/test_firewalling.py
index fb6be1b..7892c69 100644
--- a/qubesroutingmanager/test_firewalling.py
+++ b/qubesroutingmanager/test_firewalling.py
@@ -1,5 +1,3 @@
-import subprocess
-
 from unittest import mock
 from qubesroutingmanager import setup_plain_forwarding_for_address