diff --git a/src/hello-protocol.cpp b/src/hello-protocol.cpp
index 5e29223..b10afb0 100644
--- a/src/hello-protocol.cpp
+++ b/src/hello-protocol.cpp
@@ -45,6 +45,8 @@
                                        std::bind(&HelloProtocol::onContent,
                                                  this,
                                                  _1, _2),
+                                       std::bind(&HelloProtocol::processInterestTimedOut, // Nack
+                                                 this, _1),
                                        std::bind(&HelloProtocol::processInterestTimedOut,
                                                  this, _1));
 }