diff --git a/TetherController.cpp b/TetherController.cpp
index 2fc2138..8b8a294 100644
--- a/TetherController.cpp
+++ b/TetherController.cpp
@@ -17,6 +17,7 @@
 #include <stdlib.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <string.h>
 
 #include <sys/socket.h>
 #include <sys/stat.h>