diff --git a/src/lte/test/test-asn1-encoding.cc b/src/lte/test/test-asn1-encoding.cc
index 5c60c9294..f76e90333 100644
--- a/src/lte/test/test-asn1-encoding.cc
+++ b/src/lte/test/test-asn1-encoding.cc
@@ -28,6 +28,8 @@
 #include "ns3/string.h"
 #include "ns3/test.h"
 
+#include <iomanip>
+
 using namespace ns3;
 
 NS_LOG_COMPONENT_DEFINE("Asn1EncodingTest");