diff --git a/src/olsr/examples/olsr-hna.cc b/src/olsr/examples/olsr-hna.cc
index 3e53f4c9d..56b13af9e 100644
--- a/src/olsr/examples/olsr-hna.cc
+++ b/src/olsr/examples/olsr-hna.cc
@@ -50,20 +50,19 @@
 // ./waf --run "olsr-hna --assocMethod2=1"
 //
 
-#include "ns3/core-module.h"
-#include "ns3/network-module.h"
-#include "ns3/mobility-module.h"
-#include "ns3/config-store-module.h"
-#include "ns3/wifi-module.h"
-#include "ns3/csma-module.h"
-#include "ns3/internet-module.h"
-#include "ns3/olsr-routing-protocol.h"
-#include "ns3/olsr-helper.h"
-
 #include <iostream>
 #include <fstream>
 #include <vector>
 #include <string>
+#include "ns3/core-module.h"
+#include "ns3/network-module.h"
+#include "ns3/mobility-module.h"
+#include "ns3/config-store-module.h"
+#include "ns3/csma-module.h"
+#include "ns3/internet-module.h"
+#include "ns3/olsr-routing-protocol.h"
+#include "ns3/olsr-helper.h"
+#include "ns3/yans-wifi-helper.h"
 
 using namespace ns3;