diff --git a/tests/flow_plugin/flowtest_flows.py b/tests/flow_plugin/flowtest_flows.py
index dd981f218..6f8e3c699 100644
--- a/tests/flow_plugin/flowtest_flows.py
+++ b/tests/flow_plugin/flowtest_flows.py
@@ -1,3 +1,4 @@
+# ruff: noqa: F841
 from __future__ import absolute_import
 
 from errbot import BotFlow, FlowRoot, botflow