diff --git a/src/mgmt/nfd/strategy-choice.hpp b/src/mgmt/nfd/strategy-choice.hpp
index 8cdaa59..ec46348 100644
--- a/src/mgmt/nfd/strategy-choice.hpp
+++ b/src/mgmt/nfd/strategy-choice.hpp
@@ -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).
  *
@@ -87,6 +87,18 @@
   mutable Block m_wire;
 };
 
+bool
+operator==(const StrategyChoice& a, const StrategyChoice& b);
+
+inline bool
+operator!=(const StrategyChoice& a, const StrategyChoice& b)
+{
+  return !(a == b);
+}
+
+std::ostream&
+operator<<(std::ostream& os, const StrategyChoice& sc);
+
 } // namespace nfd
 } // namespace ndn