diff -uNr wavemon-0.9.0/iw_nl80211.h wavemon-0.9.0.mod/iw_nl80211.h
--- wavemon-0.9.0/iw_nl80211.h	2018-12-30 03:08:25.000000000 +0200
+++ wavemon-0.9.0.mod/iw_nl80211.h	2019-07-03 16:49:23.890816614 +0300
@@ -5,6 +5,7 @@
  * Definitions and functions for nl80211 based routines.
  */
 #include <stdbool.h>
+#include <net/ethernet.h>
 #include <netinet/ether.h>
 
 #include <netlink/netlink.h>
