diff --git a/daemon/face/transport.hpp b/daemon/face/transport.hpp
index 55efe3b..d069a0e 100644
--- a/daemon/face/transport.hpp
+++ b/daemon/face/transport.hpp
@@ -237,13 +237,9 @@
   /** \brief invoked before persistency is changed
    *  \throw std::invalid_argument new persistency is not supported
    *  \throw std::runtime_error transition is disallowed
-   *
-   *  Base class implementation does nothing.
    */
   virtual void
-  beforeChangePersistency(ndn::nfd::FacePersistency newPersistency)
-  {
-  }
+  beforeChangePersistency(ndn::nfd::FacePersistency newPersistency) = 0;
 
   /** \brief performs Transport specific operations to close the transport
    *
@@ -337,13 +333,6 @@
   return m_persistency;
 }
 
-inline void
-Transport::setPersistency(ndn::nfd::FacePersistency persistency)
-{
-  this->beforeChangePersistency(persistency);
-  m_persistency = persistency;
-}
-
 inline ndn::nfd::LinkType
 Transport::getLinkType() const
 {