diff --git a/lib/rscons/builders/install.rb b/lib/rscons/builders/install.rb
index f76397b..eaca987 100644
--- a/lib/rscons/builders/install.rb
+++ b/lib/rscons/builders/install.rb
@@ -57,6 +57,7 @@ module Rscons
 
     end
 
+    # The Copy builder is identical to the Install builder.
     class Copy < Install; end
 
   end