diff --git a/subcmds/grep.py b/subcmds/grep.py
index 1157355..a588a78 100644
--- a/subcmds/grep.py
+++ b/subcmds/grep.py
@@ -1,3 +1,4 @@
+# -*- coding:utf-8 -*-
 #
 # Copyright (C) 2009 The Android Open Source Project
 #