diff --git a/tests/unit/browser/test_adblock.py b/tests/unit/browser/test_adblock.py
index e160c2726..afb556559 100644
--- a/tests/unit/browser/test_adblock.py
+++ b/tests/unit/browser/test_adblock.py
@@ -1,3 +1,4 @@
+# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
 #!/usr/bin/env python3
 
 # Copyright 2015 Corentin Julé <corentinjule@gmail.com>