diff --git a/ChangeLog b/ChangeLog
index 382f3638ba..5b3789ea2b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Dec 25 22:45:10 2007  Koichi Sasada  <ko1@atdot.net>
+
+	* insns2vm.rb: add encoding option to shbang.
+
 Tue Dec 25 22:13:51 2007  Koichi Sasada  <ko1@atdot.net>
 
 	* bootstraptest/pending.rb: add pending issue.
diff --git a/tool/insns2vm.rb b/tool/insns2vm.rb
index 18e4a69754..47aba50c1e 100755
--- a/tool/insns2vm.rb
+++ b/tool/insns2vm.rb
@@ -1,4 +1,4 @@
-#!/usr/bin/env ruby
+#!ruby -Kn
 
 require 'optparse'