--- sane-backends-1.0.22.orig/backend/hp5400_sanei.c	2010-12-02 00:49:58.000000000 +0100
+++ sane-backends-1.0.22/backend/hp5400_sanei.c	2014-03-18 08:39:35.000000000 +0100
@@ -56,6 +56,7 @@
 #include "hp5400_xfer.h"
 #include "hp5400_debug.h"
 #include <stdio.h>
+#include <sys/types.h>
 #include "../include/sane/sanei_usb.h"
 
 #define CMD_INITBULK1   0x0087	/* send 0x14 */