diff --git a/tests/core/simple-notification.hpp b/tests/core/simple-notification.hpp
deleted file mode 100644
index 44c0be5..0000000
--- a/tests/core/simple-notification.hpp
+++ /dev/null
@@ -1,91 +0,0 @@
-/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2014-2015,  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.
- *
- * NFD is free software: you can redistribute it and/or modify it under the terms
- * of the GNU General Public License as published by the Free Software Foundation,
- * either version 3 of the License, or (at your option) any later version.
- *
- * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
- * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE.  See the GNU General Public License for more details.
- *
- * 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_TESTS_CORE_SIMPLE_NOTIFICATION_HPP
-#define NFD_TESTS_CORE_SIMPLE_NOTIFICATION_HPP
-
-#include "common.hpp"
-
-#include "tests/test-common.hpp"
-
-namespace nfd {
-namespace tests {
-
-class SimpleNotification
-{
-public:
-  SimpleNotification()
-  {
-  }
-
-  SimpleNotification(const std::string& message)
-    : m_message(message)
-  {
-  }
-
-  ~SimpleNotification()
-  {
-  }
-
-  Block
-  wireEncode() const
-  {
-    ndn::EncodingBuffer buffer;
-    prependStringBlock(buffer, 0x8888, m_message);
-    return buffer.block();
-  }
-
-  void
-  wireDecode(const Block& block)
-  {
-    m_message.assign(reinterpret_cast<const char*>(block.value()),
-                     block.value_size());
-
-    // error for testing
-    if (!m_message.empty() && m_message[0] == '\x07')
-      BOOST_THROW_EXCEPTION(tlv::Error("0x07 error"));
-  }
-
-public:
-  const std::string&
-  getMessage() const
-  {
-    return m_message;
-  }
-
-  void
-  setMessage(const std::string& message)
-  {
-    m_message = message;
-  }
-
-private:
-  std::string m_message;
-};
-
-} // namespace tests
-} // namespace nfd
-
-#endif // NFD_TESTS_CORE_SIMPLE_NOTIFICATION_HPP