diff -urN a/xfsettingsd/main.c b/xfsettingsd/main.c
--- a/xfsettingsd/main.c	2015-02-24 02:33:11.000000000 +0100
+++ b/xfsettingsd/main.c	2015-05-15 23:18:30.659510539 +0200
@@ -49,6 +49,8 @@
 #include <libxfce4util/libxfce4util.h>
 #include <libxfce4ui/libxfce4ui.h>
 
+#include <locale.h>
+
 #include "debug.h"
 #include "accessibility.h"
 #include "pointers.h"
@@ -238,6 +240,8 @@
         return EXIT_FAILURE;
     }
 
+    setlocale(LC_NUMERIC,"C");
+
     dbus_connection = dbus_bus_get (DBUS_BUS_SESSION, NULL);
     if (G_LIKELY (dbus_connection != NULL))
     {