diff --git a/lib/rprogram/option.rb b/lib/rprogram/option.rb
index <HASH>..<HASH> 100644
--- a/lib/rprogram/option.rb
+++ b/lib/rprogram/option.rb
@@ -1,5 +1,3 @@
-require 'rprogram/extensions'
-
 module RProgram
   class Option
Don't require 'rprogram/extensions' any more.