diff --git a/test/json_test.rb b/test/json_test.rb
index 5efad80..e981ed7 100644
--- a/test/json_test.rb
+++ b/test/json_test.rb
@@ -1,3 +1,4 @@
+# coding: utf-8
 require 'test_helper'
 
 class JsonTest < Test::Unit::TestCase  
@@ -62,4 +63,4 @@ class JsonTest < Test::Unit::TestCase
     }.should_not raise_error(Crack::ParseError)
   end
 
-end
\ No newline at end of file
+end