diff --git a/helper/ccnx-face-container.h b/helper/ccnx-face-container.h
index 4426449..ecb29d9 100644
--- a/helper/ccnx-face-container.h
+++ b/helper/ccnx-face-container.h
@@ -23,20 +23,24 @@
 
 #include <stdint.h>
 #include <vector>
-#include "ns3/ccnx.h"
+
+#include "ns3/ptr.h"
+#include "ns3/simple-ref-count.h"
 
 namespace ns3 {
 
+class CcnxFace;
+
 /**
- * \ingroup ccnx
+ * \ingroup ccnx-helpers
  * \brief A pool for CCNx faces
  * 
  * Provides tools to perform basic manipulation on faces, such as
  * setting metrics and states on faces
  *
- * \see Ccnx
+ * \see CcnxStackHelper
  */
-class CcnxFaceContainer
+class CcnxFaceContainer : public SimpleRefCount<CcnxFaceContainer>
 {
 private:
   typedef std::vector<Ptr<CcnxFace> > FaceContainer;
@@ -67,6 +71,13 @@
   /**
    * \brief Add all entries from other container
    *
+   * \param other smart pointer to a container
+   */
+  void AddAll (Ptr<CcnxFaceContainer> other);
+
+  /**
+   * \brief Add all entries from other container
+   *
    * \param other container
    */
   void AddAll (const CcnxFaceContainer &other);