diff --git a/NetworkToolkit.cpp b/NetworkToolkit.cpp
index c4a9b9c..f7881e3 100644
--- a/NetworkToolkit.cpp
+++ b/NetworkToolkit.cpp
@@ -1,6 +1,7 @@
 
 #include <algorithm>
 
+#include <string.h>
 #include <unistd.h>
 #include <sys/ioctl.h>
 #include <sys/socket.h>