diff --git a/examples/interest-header-example.cc b/examples/interest-header-example.cc
index 2b595b1..a93da9a 100644
--- a/examples/interest-header-example.cc
+++ b/examples/interest-header-example.cc
@@ -53,6 +53,9 @@
 	UniformVariable random(1, std::numeric_limits<uint32_t>::max ());
     uint32_t randomNonce = static_cast<uint32_t> (random.GetValue());
     interestHeader.SetNonce(randomNonce);
+    
+    interestHeader.SetNack(true);
+    interestHeader.SetCongested(true);
 	NS_LOG_INFO ("Source: \n" << interestHeader);
     
 	packet.AddHeader (interestHeader);