diff --git a/Rakefile b/Rakefile
index 69294db30..5a8fbdb50 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,4 +1,3 @@
-# encoding: utf-8
 # Build description.
 # basic build file for mruby
 MRUBY_ROOT = File.dirname(File.expand_path(__FILE__))