diff --git a/helper/ccnb-parser/syntax-tree/ccnb-parser-udata.h b/helper/ccnb-parser/syntax-tree/ccnb-parser-udata.h
index c75fc9d..b6ef2c2 100644
--- a/helper/ccnb-parser/syntax-tree/ccnb-parser-udata.h
+++ b/helper/ccnb-parser/syntax-tree/ccnb-parser-udata.h
@@ -44,10 +44,10 @@
    */
   Udata (Buffer::Iterator &start, uint32_t length);
   
-  virtual void accept( Visitor &v )                           { v.visit( *this ); }
-  virtual void accept( GJVoidVisitor &v, boost::any param )   { v.visit( *this, param ); }
-  virtual boost::any accept( GJNoArguVisitor &v )             { return v.visit( *this ); }
-  virtual boost::any accept( GJVisitor &v, boost::any param ) { return v.visit( *this, param ); }
+  virtual void accept( VoidNoArguVisitor &v )               { v.visit( *this ); }
+  virtual void accept( VoidVisitor &v, boost::any param )   { v.visit( *this, param ); }
+  virtual boost::any accept( NoArguVisitor &v )             { return v.visit( *this ); }
+  virtual boost::any accept( Visitor &v, boost::any param ) { return v.visit( *this, param ); }
 
   std::string m_udata; ///< \brief field holding a parsed UDATA value of the block
 };