diff --git a/apps/ndn-consumer-cbr.cc b/apps/ndn-consumer-cbr.cc
index 431f9ba..9a0a638 100644
--- a/apps/ndn-consumer-cbr.cc
+++ b/apps/ndn-consumer-cbr.cc
@@ -27,6 +27,7 @@
 #include "ns3/string.h"
 #include "ns3/boolean.h"
 #include "ns3/uinteger.h"
+#include "ns3/integer.h"
 #include "ns3/double.h"
 
 #include "ns3/ndn-app-face.h"
diff --git a/apps/ndn-consumer.cc b/apps/ndn-consumer.cc
index b6dba28..adbce0f 100644
--- a/apps/ndn-consumer.cc
+++ b/apps/ndn-consumer.cc
@@ -27,6 +27,7 @@
 #include "ns3/string.h"
 #include "ns3/boolean.h"
 #include "ns3/uinteger.h"
+#include "ns3/integer.h"
 #include "ns3/double.h"
 
 #include "ns3/ndn-app-face.h"