diff --git a/ndn-cpp/fields/name.h b/ndn-cpp/fields/name.h
index 18e2412..a356f8f 100644
--- a/ndn-cpp/fields/name.h
+++ b/ndn-cpp/fields/name.h
@@ -18,6 +18,10 @@
 
 namespace ndn {
 
+class Name;
+typedef boost::shared_ptr<Name> NamePtr;
+typedef boost::shared_ptr<const Name> ConstNamePtr;
+
 /**
  * @brief Class for NDN Name
  */
@@ -393,8 +397,6 @@
   std::vector<name::Component> m_comps;
 };
 
-typedef boost::shared_ptr<Name> NamePtr;
-
 inline std::ostream &
 operator << (std::ostream &os, const Name &name)
 {