diff --git a/xorriso/write_run.c b/xorriso/write_run.c
index 17e939a8..52a5e73b 100644
--- a/xorriso/write_run.c
+++ b/xorriso/write_run.c
@@ -767,7 +767,10 @@ int Xorriso_write_session(struct XorrisO *xorriso, int flag)
    {ret= 0; goto ex;}
  isoburn_igopt_set_sort_files(sopts, 1);
  isoburn_igopt_set_over_mode(sopts, 0, 0, (mode_t) 0, (mode_t) 0);
- isoburn_igopt_set_over_ugid(sopts, 0, 0, (uid_t) 0, (gid_t) 0);
+ isoburn_igopt_set_over_ugid(sopts, 2 * !!xorriso->do_global_uid,
+                             2 * !!xorriso->do_global_gid,
+                             (uid_t) xorriso->global_uid,
+                             (gid_t) xorriso->global_gid);
  isoburn_igopt_set_out_charset(sopts, out_cs);
  isoburn_igopt_set_fifo_size(sopts, xorriso->fs * 2048);
  Ftimetxt(time(NULL), xorriso->scdbackup_tag_time, 8);
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index 32525f7a..21a2dd22 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2011.04.03.094634"
+#define Xorriso_timestamP "2011.04.04.064909"