--- gnome-disk-utility-3.28.2/src/disks/gdubenchmarkdialog.c.m_pi	2018-05-08 08:43:30.000000000 +0200
+++ gnome-disk-utility-3.28.2/src/disks/gdubenchmarkdialog.c	2018-05-24 00:49:32.870767764 +0200
@@ -18,6 +18,10 @@
 #include <sys/ioctl.h>
 #include <linux/fs.h>
 
+#ifndef __USE_XOPEN
+#define __USE_XOPEN
+#endif
+
 #include <math.h>
 
 #include "gduapplication.h"