diff --git a/helper/ccnb-parser/syntax-tree/ccnb-parser-base-tag.h b/helper/ccnb-parser/syntax-tree/ccnb-parser-base-tag.h
index 6b7fe76..604ebce 100644
--- a/helper/ccnb-parser/syntax-tree/ccnb-parser-base-tag.h
+++ b/helper/ccnb-parser/syntax-tree/ccnb-parser-base-tag.h
@@ -40,6 +40,9 @@
   std::list<Ptr<Block> > m_attrs;      ///< \brief List of attributes, associated with this tag
   std::list<Ptr<Block> > m_nestedTags; ///< \brief List of nested tags
 
+public:
+  virtual ~BaseTag () { }
+  
 protected:
   /**
    * \brief Default constructor
diff --git a/helper/ccnb-parser/syntax-tree/ccnb-parser-block.cc b/helper/ccnb-parser/syntax-tree/ccnb-parser-block.cc
index 74807d3..09bf96a 100644
--- a/helper/ccnb-parser/syntax-tree/ccnb-parser-block.cc
+++ b/helper/ccnb-parser/syntax-tree/ccnb-parser-block.cc
@@ -28,6 +28,10 @@
 #include "ccnb-parser-dattr.h"
 #include "ccnb-parser-ext.h"
 
+#include "ns3/log.h"
+
+NS_LOG_COMPONENT_DEFINE ("CcnbParserBlock");
+
 namespace ns3 {
 namespace CcnbParser {
 
@@ -40,6 +44,8 @@
 
 Ptr<Block> Block::ParseBlock (Buffer::Iterator &start)
 {
+  NS_LOG_DEBUG (">");
+
   // std::cout << "<< pos: " << counter << "\n";
   uint32_t value = 0;
 
@@ -57,7 +63,7 @@
   
   value <<= 4;
   value += ( (byte&(~CCN_TT_HBIT)) >> 3);
-
+  
   /**
    * Huh. After fighting with NS-3, it became apparent that Create<T>(...) construct
    * doesn't work with references.  Just simply doesn't work.  wtf?
@@ -83,5 +89,10 @@
     }
 }
 
+Block::~Block ()
+{
+  NS_LOG_DEBUG ("<");
+}
+
 }
 }
diff --git a/helper/ccnb-parser/syntax-tree/ccnb-parser-block.h b/helper/ccnb-parser/syntax-tree/ccnb-parser-block.h
index 59ccf02..a188597 100644
--- a/helper/ccnb-parser/syntax-tree/ccnb-parser-block.h
+++ b/helper/ccnb-parser/syntax-tree/ccnb-parser-block.h
@@ -56,6 +56,8 @@
    */
   static Ptr<Block>
   ParseBlock (Buffer::Iterator &start);
+
+  virtual ~Block ();
   
   virtual void accept( VoidNoArguVisitor &v )               = 0;
   virtual void accept( VoidVisitor &v, boost::any param )   = 0;