--- a/pppd/plugins/rp-pppoe/debug.c
+++ b/pppd/plugins/rp-pppoe/debug.c
@@ -16,6 +16,8 @@
 static char const RCSID[] =
 "$Id: debug.c,v 1.2 2008/06/09 08:34:23 paulus Exp $";
 
+#include <sys/types.h>
+
 #include "pppoe.h"
 #include <sys/time.h>
 #include <time.h>