diff --git a/packet.c b/packet.c
index 6d58ebc..ab5a010 100644
--- a/packet.c
+++ b/packet.c
@@ -50,6 +50,7 @@
 #include <netinet/in_systm.h>
 #include <netinet/in.h>
 #include <netinet/ip.h>
+#include <arpa/inet.h>
 
 #include <errno.h>
 #include <stdarg.h>