diff --git a/src/util/logging.cpp b/src/util/logging.cpp
index 13fd36d..9961598 100644
--- a/src/util/logging.cpp
+++ b/src/util/logging.cpp
@@ -1,5 +1,5 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
+/*
  * Copyright (c) 2013-2017 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
@@ -23,10 +23,12 @@
 #include "logger.hpp"
 
 #include <boost/log/expressions.hpp>
-#include <boost/range/algorithm/copy.hpp>
 #include <boost/range/adaptor/map.hpp>
+#include <boost/range/algorithm/copy.hpp>
+
 #include <cstdlib>
-#include <fstream>
+#include <iostream>
+#include <sstream>
 
 namespace ndn {
 namespace util {