diff --git a/extras/romstr.py b/extras/romstr.py
index 2c0d5c139..e9fbab180 100644
--- a/extras/romstr.py
+++ b/extras/romstr.py
@@ -1,3 +1,5 @@
+# -*- coding: utf-8 -*-
+
 import sys
 import os
 import time