diff --git a/host/usrp_e_utils/usrp-e-loopback.cpp b/host/usrp_e_utils/usrp-e-loopback.cpp
index 6b5ebd55f..5b289c648 100644
--- a/host/usrp_e_utils/usrp-e-loopback.cpp
+++ b/host/usrp_e_utils/usrp-e-loopback.cpp
@@ -18,6 +18,7 @@
 #include "common.hpp"
 #include <cstdlib>
 #include <cstdio>
+#include <cstring>
 #include <ctime>
 #include <iostream>
 #include <boost/thread/thread.hpp>