diff --git a/app/application.rb b/app/application.rb
index 81f5bae..1ab283c 100755
--- a/app/application.rb
+++ b/app/application.rb
@@ -1,5 +1,6 @@
 #!/usr/bin/env ruby
 # coding: utf-8
+Encoding.default_external = 'utf-8'
 require 'cgi'
 
 def cat(file)
diff --git a/app/submit.rb b/app/submit.rb
index a1ee41d..a686bb8 100755
--- a/app/submit.rb
+++ b/app/submit.rb
@@ -1,5 +1,6 @@
 #!/usr/bin/env ruby
 # coding: utf-8
+Encoding.default_external = 'utf-8'
 require 'kconv'
 require 'cgi'