diff --git a/examples/state_machine_bot.py b/examples/state_machine_bot.py
index c9bbd5608..cf3880215 100644
--- a/examples/state_machine_bot.py
+++ b/examples/state_machine_bot.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python
-
+# -*- coding: utf-8 -*-
+#
 # Basic example for a bot that awaits an answer from the user
 # This program is dedicated to the public domain under the CC0 license.