diff --git a/core/common.hpp b/core/common.hpp
index 09d378c..01a30c4 100644
--- a/core/common.hpp
+++ b/core/common.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2014-2015,  Regents of the University of California,
+ * Copyright (c) 2014-2016,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -63,6 +63,7 @@
 #include <ndn-cxx/security/key-chain.hpp>
 #include <ndn-cxx/security/signing-helpers.hpp>
 #include <ndn-cxx/security/signing-info.hpp>
+#include <ndn-cxx/util/backports.hpp>
 #include <ndn-cxx/util/scheduler.hpp>
 #include <ndn-cxx/util/scheduler-scoped-event-id.hpp>
 #include <ndn-cxx/util/signal.hpp>