diff --git a/core/version.cpp.in b/core/version.cpp.in
index 7c44aac..8abef00 100644
--- a/core/version.cpp.in
+++ b/core/version.cpp.in
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2014-2017,  Arizona Board of Regents.
+/*
+ * Copyright (c) 2014-2022,  Arizona Board of Regents.
  *
  * This file is part of ndn-tools (Named Data Networking Essential Tools).
  * See AUTHORS.md for complete list of ndn-tools authors and contributors.
diff --git a/core/version.hpp b/core/version.hpp
index 440f1bc..03058f6 100644
--- a/core/version.hpp
+++ b/core/version.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2014-2015,  Arizona Board of Regents.
+/*
+ * Copyright (c) 2014-2022,  Arizona Board of Regents.
  *
  * This file is part of ndn-tools (Named Data Networking Essential Tools).
  * See AUTHORS.md for complete list of ndn-tools authors and contributors.
@@ -20,12 +20,13 @@
 #ifndef NDN_TOOLS_CORE_VERSION_HPP
 #define NDN_TOOLS_CORE_VERSION_HPP
 
-#include "common.hpp"
+#include "core/common.hpp"
 
 namespace ndn {
 namespace tools {
 
-/** \brief version of ndn-tools
+/**
+ * \brief The version of ndn-tools.
  */
 extern const char VERSION[];