diff --git a/libnetutil/netutil.cc b/libnetutil/netutil.cc
index b1eda2c8a..e6ba1094e 100644
--- a/libnetutil/netutil.cc
+++ b/libnetutil/netutil.cc
@@ -134,6 +134,7 @@
 #include "mswin32/winclude.h"
 #include "pcap-int.h"
 #else
+#include <sys/uio.h>
 #include <sys/ioctl.h>
 #endif