More debug
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