diff --git a/helper/ccnb-parser/syntax-tree/ccnb-parser-block.cc b/helper/ccnb-parser/syntax-tree/ccnb-parser-block.cc
index d0f795f..74807d3 100644
--- a/helper/ccnb-parser/syntax-tree/ccnb-parser-block.cc
+++ b/helper/ccnb-parser/syntax-tree/ccnb-parser-block.cc
@@ -65,19 +65,19 @@
   switch (byte & CCN_TT_MASK)
     {
     case CCN_BLOB:
-      return Ptr<Blob> (new Blob(start, value));
+      return Ptr<Blob> (new Blob(start, value), false);
     case CCN_UDATA:
-      return Ptr<Udata> (new Udata(start, value));
+      return Ptr<Udata> (new Udata(start, value), false);
     case CCN_TAG:
-      return Ptr<Tag> (new Tag(start, value));
+      return Ptr<Tag> (new Tag(start, value), false);
     case CCN_ATTR:
-      return Ptr<Attr> (new Attr(start, value));
+      return Ptr<Attr> (new Attr(start, value), false);
     case CCN_DTAG:
-      return Ptr<Dtag> (new Dtag(start, value));
+      return Ptr<Dtag> (new Dtag(start, value), false);
     case CCN_DATTR:
-      return Ptr<Dattr> (new Dattr(start, value));
+      return Ptr<Dattr> (new Dattr(start, value), false);
     case CCN_EXT:
-      return Ptr<Ext> (new Ext(start, value));
+      return Ptr<Ext> (new Ext(start, value), false);
     default:
       throw CcnbDecodingException ();
     }
diff --git a/helper/ccnx-decoding-helper.cc b/helper/ccnx-decoding-helper.cc
index 52061ab..54f636b 100644
--- a/helper/ccnx-decoding-helper.cc
+++ b/helper/ccnx-decoding-helper.cc
@@ -40,6 +40,8 @@
   Ptr<CcnbParser::Block> root = CcnbParser::Block::ParseBlock (i);
   root->accept (interestVisitor, &interest);
 
+  root = 0;
+  
   return i.GetDistanceFrom (start);
 }