diff --git a/thunar/thunar-size-label.c b/thunar/thunar-size-label.c
index bb0839c..6630600 100644
--- a/thunar/thunar-size-label.c
+++ b/thunar/thunar-size-label.c
@@ -409,7 +409,7 @@ thunar_size_label_status_update (ThunarDeepCountJob *job,
   if (G_LIKELY (n > unreadable_directory_count))
     {
       /* update the label */
-      size_string = g_format_size_full (total_size, size_label->file_size_binary ? G_FORMAT_SIZE_IEC_UNITS : G_FORMAT_SIZE_DEFAULT);
+      size_string = g_format_size_full (total_size, G_FORMAT_SIZE_LONG_FORMAT | (size_label->file_size_binary ? G_FORMAT_SIZE_IEC_UNITS : G_FORMAT_SIZE_DEFAULT));
       text = g_strdup_printf (ngettext ("%u item, totalling %s", "%u items, totalling %s", n), n, size_string);
       g_free (size_string);