--- tools/mate-session-inhibit.c.orig	2015-05-21 21:08:13.349790585 +0200
+++ tools/mate-session-inhibit.c	2015-05-21 21:08:22.765889625 +0200
@@ -24,6 +24,7 @@
 #include <unistd.h>
 #include <stdlib.h>
 #include <string.h>
+#include <locale.h>
 
 #include <glib.h>
 #include <glib/gi18n.h>
