diff --git a/ndn-cpp/util/changed-event.hpp b/ndn-cpp/util/changed-event.hpp
index ce4b20f..71be366 100644
--- a/ndn-cpp/util/changed-event.hpp
+++ b/ndn-cpp/util/changed-event.hpp
@@ -1,3 +1,4 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
 /**
  * Copyright (C) 2013 Regents of the University of California.
  * @author: Jeff Thompson <jefft0@remap.ucla.edu>
@@ -8,7 +9,7 @@
 #define	NDN_CHANGED_EVENT_HPP
 
 #include <vector>
-#include "../common.hpp"
+#include <ndn-cpp/common.hpp>
 
 namespace ndn {