diff --git a/tests/unit-tests/security/v1/certificate.t.cpp b/tests/unit-tests/security/v1/certificate.t.cpp
index 043a1fb..5b410c5 100644
--- a/tests/unit-tests/security/v1/certificate.t.cpp
+++ b/tests/unit-tests/security/v1/certificate.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2016 Regents of the University of California.
+ * Copyright (c) 2013-2017 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -22,8 +22,6 @@
 #include "security/v1/certificate.hpp"
 #include "security/v1/public-key.hpp"
 
-#include "security/key-chain.hpp"
-
 #include "security/v1/cryptopp.hpp"
 
 #include "boost-test.hpp"