diff --git a/helper/ccnx-consumer-helper.h b/helper/ccnx-consumer-helper.h
index d885e2e..7d0011f 100644
--- a/helper/ccnx-consumer-helper.h
+++ b/helper/ccnx-consumer-helper.h
@@ -34,6 +34,9 @@
 #include "ns3/ccnx-local-face.h"
 #include "ns3/callback.h"
 #include "ns3/ccnx-consumer.h"
+#include "ns3/log.h"
+#include "ns3/string.h"
+#include "ns3/names.h"
 
 namespace ns3 
 {