diff --git a/lib/iso4217/code.rb b/lib/iso4217/code.rb
index 2ad8f58..f54e8cc 100644
--- a/lib/iso4217/code.rb
+++ b/lib/iso4217/code.rb
@@ -1,3 +1,4 @@
+# encoding: UTF-8
 module ISO4217
   CODE["AED"] = ISO4217::Code.new(
     :code => "AED",