diff --git a/tests/test_profile.py b/tests/test_profile.py
index 5946ce467..ad0b97dcb 100644
--- a/tests/test_profile.py
+++ b/tests/test_profile.py
@@ -1,3 +1,5 @@
+# -*- coding: utf-8 -*-
+
 # authentic2 - versatile identity manager
 # Copyright (C) 2010-2019 Entr'ouvert
 #