diff --git a/Documentation/replace_macros.py b/Documentation/replace_macros.py
index a8b7699b94..baf08e7d58 100755
--- a/Documentation/replace_macros.py
+++ b/Documentation/replace_macros.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# coding=utf-8
 # Copyright (C) 2013 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");