diff --git a/src/net/80211/wpa.c b/src/net/80211/wpa.c
index 38ddb911..90929ea3 100644
--- a/src/net/80211/wpa.c
+++ b/src/net/80211/wpa.c
@@ -32,6 +32,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
+#include <byteswap.h>
 
 /** @file
  *