diff --git a/daemon/core/resolver.hpp b/daemon/core/resolver.hpp
index bd61f10..508e26d 100644
--- a/daemon/core/resolver.hpp
+++ b/daemon/core/resolver.hpp
@@ -9,7 +9,6 @@
 
 #include "common.hpp"
 #include "core/global-io.hpp"
-#include "core/time.hpp"
 #include "core/scheduler.hpp"
 
 namespace nfd {
@@ -73,7 +72,7 @@
                const SuccessCallback& onSuccess,
                const ErrorCallback& onError,
                const nfd::resolver::AddressSelector& addressSelector = nfd::resolver::AnyAddress(),
-               const time::Duration& timeout = time::seconds(4.0))
+               const time::seconds& timeout = time::seconds(4))
   {
     shared_ptr<Resolver> resolver =
       shared_ptr<Resolver>(new Resolver(onSuccess, onError,
@@ -126,7 +125,7 @@
 
   void
   asyncResolve(const std::string& host, const std::string& port,
-               const time::Duration& timeout,
+               const time::seconds& timeout,
                const shared_ptr<Resolver>& self)
   {
     typename resolver::query query(host, port,
diff --git a/daemon/core/scheduler.hpp b/daemon/core/scheduler.hpp
index 6ba4f80..a7f452b 100644
--- a/daemon/core/scheduler.hpp
+++ b/daemon/core/scheduler.hpp
@@ -8,7 +8,6 @@
 #define NFD_CORE_SCHEDULER_HPP
 
 #include "global-io.hpp"
-#include "time.hpp"
 #include <ndn-cpp-dev/util/scheduler.hpp>
 
 namespace nfd {
@@ -35,7 +34,7 @@
 getGlobalScheduler();
 
 inline EventId
-schedule(const time::Duration& after, const Scheduler::Event& event)
+schedule(const time::nanoseconds& after, const Scheduler::Event& event)
 {
   return getGlobalScheduler().scheduleEvent(after, event);
 }
diff --git a/daemon/core/time.hpp b/daemon/core/time.hpp
deleted file mode 100644
index 2c9498f..0000000
--- a/daemon/core/time.hpp
+++ /dev/null
@@ -1,28 +0,0 @@
-/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (C) 2014 Named Data Networking Project
- * See COPYING for copyright and distribution information.
- */
-
-#ifndef NFD_CORE_TIME_H
-#define NFD_CORE_TIME_H
-
-#include "common.hpp"
-#include <ndn-cpp-dev/util/time.hpp>
-
-namespace nfd {
-namespace time {
-
-using ndn::time::Duration;
-using ndn::time::Point;
-using ndn::time::monotonic_clock;
-using ndn::time::now;
-using ndn::time::seconds;
-using ndn::time::milliseconds;
-using ndn::time::microseconds;
-using ndn::time::nanoseconds;
-
-} // namespace time
-} // namespace nfd
-
-#endif // NFD_CORE_TIME_H