diff --git a/PDFNetRuby/PDFNetRuby.i b/PDFNetRuby/PDFNetRuby.i
index 049cf8b6..42436c8a 100644
--- a/PDFNetRuby/PDFNetRuby.i
+++ b/PDFNetRuby/PDFNetRuby.i
@@ -674,10 +674,6 @@ namespace pdftron {
     return Qnil;
 }
 
-// Value Wrappers prevent excessive item creation by wrapping the item in SwigValueWrapper
-%feature("valuewrapper") pdftron::PDF::PDFDoc;
-
-
 //----------------------------------------------------------------------------------------------
 /**
  * Typemap for function pointers