build: Fixing of includes
diff --git a/examples/ndn-simple-with-cs-lfu.cpp b/examples/ndn-simple-with-cs-lfu.cpp
index 0ed9079..4025763 100644
--- a/examples/ndn-simple-with-cs-lfu.cpp
+++ b/examples/ndn-simple-with-cs-lfu.cpp
@@ -24,7 +24,7 @@
 #include "ns3/ndnSIM-module.h"
 
 #include <sys/time.h>
-#include "ns3/ndnSIM/utils/mem-usage.h"
+#include "ns3/ndnSIM/utils/mem-usage.hpp"
 
 using namespace ns3;