diff --git a/helper/ndn-face-container.hpp b/helper/ndn-face-container.hpp
index b5dd2c0..fc90ad6 100644
--- a/helper/ndn-face-container.hpp
+++ b/helper/ndn-face-container.hpp
@@ -44,7 +44,7 @@
  */
 class FaceContainer : public SimpleRefCount<FaceContainer> {
 private:
-  typedef std::vector<Ptr<Face>> Container;
+  typedef std::vector<shared_ptr<Face>> Container;
 
 public:
   typedef Container::const_iterator Iterator; ///< \brief Iterator over FaceContainer
@@ -128,7 +128,7 @@
    * @see Face
    */
   void
-  Add(const Ptr<Face>& face);
+  Add(const shared_ptr<Face>& face);
 
   /**
    * Get a smart pointer to Face-derived object stored in the container
@@ -139,7 +139,7 @@
    *
    * @see Face
    */
-  Ptr<Face>
+  shared_ptr<Face>
   Get(Iterator i) const;
 
 private: