diff --git a/docs/examples.rst b/docs/examples.rst
index c1ad084..8689e4f 100644
--- a/docs/examples.rst
+++ b/docs/examples.rst
@@ -12,13 +12,13 @@
 
 In the following trivial example, a consumer creates a :ndn-cxx:`Face` with default
 transport (:ndn-cxx:`UnixTransport`) and sends an Interest for
-``/localhost/testApp/randomData``.  While expressing Interest, the app specifies two
-callbacks to be called when Data is retrieved or Interest times out.
+``/localhost/testApp/randomData``.  While expressing Interest, the app specifies three
+callbacks to be called when Data/Nack is retrieved or Interest times out.
 
 .. literalinclude:: ../examples/consumer.cpp
    :language: c++
    :linenos:
-   :emphasize-lines: 24-27,39,43-46,50,57,67
+   :emphasize-lines: 24-27,39,43-47,51,58,75
 
 
 Trivial producer
@@ -66,5 +66,5 @@
 .. literalinclude:: ../examples/consumer-with-timer.cpp
    :language: c++
    :linenos:
-   :emphasize-lines: 39-40,51-54,58-59,61-62,99-100
+   :emphasize-lines: 39-40,51-55,59-60,62-63,108-109
 
diff --git a/examples/consumer-with-timer.cpp b/examples/consumer-with-timer.cpp
index c08a312..8c82cf6 100644
--- a/examples/consumer-with-timer.cpp
+++ b/examples/consumer-with-timer.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2015 Regents of the University of California.
+ * Copyright (c) 2013-2016 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -50,6 +50,7 @@
 
     m_face.expressInterest(interest,
                            bind(&ConsumerWithTimer::onData, this, _1, _2),
+                           bind(&ConsumerWithTimer::onNack, this, _1, _2),
                            bind(&ConsumerWithTimer::onTimeout, this, _1));
 
     std::cout << "Sending " << interest << std::endl;
@@ -74,6 +75,13 @@
   }
 
   void
+  onNack(const Interest& interest, const lp::Nack& nack)
+  {
+    std::cout << "received Nack with reason " << nack.getReason()
+              << " for interest " << interest << std::endl;
+  }
+
+  void
   onTimeout(const Interest& interest)
   {
     std::cout << "Timeout " << interest << std::endl;
@@ -90,6 +98,7 @@
 
     m_face.expressInterest(interest,
                            bind(&ConsumerWithTimer::onData, this, _1, _2),
+                           bind(&ConsumerWithTimer::onNack, this, _1, _2),
                            bind(&ConsumerWithTimer::onTimeout, this, _1));
 
     std::cout << "Sending " << interest << std::endl;
diff --git a/examples/consumer.cpp b/examples/consumer.cpp
index 4042565..0e0ff43 100644
--- a/examples/consumer.cpp
+++ b/examples/consumer.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2015 Regents of the University of California.
+ * Copyright (c) 2013-2016 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -42,6 +42,7 @@
 
     m_face.expressInterest(interest,
                            bind(&Consumer::onData, this,  _1, _2),
+                           bind(&Consumer::onNack, this, _1, _2),
                            bind(&Consumer::onTimeout, this, _1));
 
     std::cout << "Sending " << interest << std::endl;
@@ -58,6 +59,13 @@
   }
 
   void
+  onNack(const Interest& interest, const lp::Nack& nack)
+  {
+    std::cout << "received Nack with reason " << nack.getReason()
+              << " for interest " << interest << std::endl;
+  }
+
+  void
   onTimeout(const Interest& interest)
   {
     std::cout << "Timeout " << interest << std::endl;