diff --git a/arpspoof.c b/arpspoof.c
index ab127f9..681f809 100644
--- a/arpspoof.c
+++ b/arpspoof.c
@@ -23,6 +23,7 @@
 #include <err.h>
 #include <libnet.h>
 #include <pcap.h>
+#include <net/ethernet.h>
 
 #include "arp.h"
 #include "version.h"