diff --git a/src/name-prefix-list.hpp b/src/name-prefix-list.hpp
index 9f50d2e..100cd2a 100644
--- a/src/name-prefix-list.hpp
+++ b/src/name-prefix-list.hpp
@@ -1,7 +1,8 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2014  University of Memphis,
- *                     Regents of the University of California
+ * Copyright (c) 2014-2015,  The University of Memphis,
+ *                           Regents of the University of California,
+ *                           Arizona Board of Regents.
  *
  * This file is part of NLSR (Named-data Link State Routing).
  * See AUTHORS.md for complete list of NLSR authors and contributors.
@@ -16,10 +17,8 @@
  *
  * You should have received a copy of the GNU General Public License along with
  * NLSR, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
- *
- * \author A K M Mahmudul Hoque <ahoque1@memphis.edu>
- *
  **/
+
 #ifndef NLSR_NAME_PREFIX_LIST_HPP
 #define NLSR_NAME_PREFIX_LIST_HPP
 
@@ -38,10 +37,16 @@
 
   ~NamePrefixList();
 
-  int32_t
+  /** \brief inserts name into NamePrefixList
+   *  \return true if the name is inserted, otherwise false
+   */
+  bool
   insert(const ndn::Name& name);
 
-  int32_t
+  /** \brief removes name from NamePrefixList
+   *  \return true if the name is removed, otherwise false
+   */
+  bool
   remove(const ndn::Name& name);
 
   void