diff --git a/daemon/table/measurements-accessor.hpp b/daemon/table/measurements-accessor.hpp
index 2db0ccb..2108435 100644
--- a/daemon/table/measurements-accessor.hpp
+++ b/daemon/table/measurements-accessor.hpp
@@ -1,11 +1,12 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2014  Regents of the University of California,
- *                     Arizona Board of Regents,
- *                     Colorado State University,
- *                     University Pierre & Marie Curie, Sorbonne University,
- *                     Washington University in St. Louis,
- *                     Beijing Institute of Technology
+ * Copyright (c) 2014,  Regents of the University of California,
+ *                      Arizona Board of Regents,
+ *                      Colorado State University,
+ *                      University Pierre & Marie Curie, Sorbonne University,
+ *                      Washington University in St. Louis,
+ *                      Beijing Institute of Technology,
+ *                      The University of Memphis
  *
  * This file is part of NFD (Named Data Networking Forwarding Daemon).
  * See AUTHORS.md for complete list of NFD authors and contributors.
@@ -20,7 +21,7 @@
  *
  * You should have received a copy of the GNU General Public License along with
  * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
- **/
+ */
 
 #ifndef NFD_DAEMON_TABLE_MEASUREMENTS_ACCESSOR_HPP
 #define NFD_DAEMON_TABLE_MEASUREMENTS_ACCESSOR_HPP
@@ -68,7 +69,7 @@
    *  The entry will be kept until at least now()+lifetime.
    */
   void
-  extendLifetime(measurements::Entry& entry, const time::nanoseconds& lifetime);
+  extendLifetime(shared_ptr<measurements::Entry> entry, const time::nanoseconds& lifetime);
 
 private:
   /** \brief perform access control to Measurements entry
@@ -109,7 +110,8 @@
 }
 
 inline void
-MeasurementsAccessor::extendLifetime(measurements::Entry& entry, const time::nanoseconds& lifetime)
+MeasurementsAccessor::extendLifetime(shared_ptr<measurements::Entry> entry,
+                                     const time::nanoseconds& lifetime)
 {
   m_measurements.extendLifetime(entry, lifetime);
 }