build: Fixing of includes
diff --git a/utils/tracers/ndn-l3-aggregate-tracer.hpp b/utils/tracers/ndn-l3-aggregate-tracer.hpp
index dadd6ff..a94d2f5 100644
--- a/utils/tracers/ndn-l3-aggregate-tracer.hpp
+++ b/utils/tracers/ndn-l3-aggregate-tracer.hpp
@@ -21,7 +21,7 @@
 #ifndef NDN_L3_AGGREGATE_TRACER_H
 #define NDN_L3_AGGREGATE_TRACER_H
 
-#include "ndn-l3-tracer.h"
+#include "ndn-l3-tracer.hpp"
 
 #include <ns3/nstime.h>
 #include <ns3/event-id.h>