diff --git a/libisoburn/isoburn.c b/libisoburn/isoburn.c
index 859244ee..2ed723e0 100644
--- a/libisoburn/isoburn.c
+++ b/libisoburn/isoburn.c
@@ -1433,7 +1433,7 @@ int isoburn_igopt_set_system_area(struct isoburn_imgen_opts *opts,
    }
    memcpy(opts->system_area_data, data, 32768);
  }
- opts->system_area_options = options & 0x3ff;
+ opts->system_area_options = options & 0x3fff;
  return(1);
 }
 
diff --git a/libisoburn/libisoburn.h b/libisoburn/libisoburn.h
index 515f0807..cbe0bb47 100644
--- a/libisoburn/libisoburn.h
+++ b/libisoburn/libisoburn.h
@@ -1513,7 +1513,15 @@ int isoburn_igopt_get_scdbackup_tag(struct isoburn_imgen_opts *o,
                           0 = auto (align if bit1)
                           1 = always align to cylinder boundary
                           2 = never align to cylinder boundary
-
+                    bit10-13= System area sub type
+                          @since 1.2.4 
+                          With type 0 = MBR:
+                            Gets overridden by bit0 and bit1. 
+                            0 = no particular sub type
+                            1 = CHRP: A single MBR partition of type 0x96
+                                covers the ISO image. Not compatible with
+                                any other feature which needs to have own
+                                MBR partition entries.
     @return 1 success, 0 no data to get, <0 failure
 */
 int isoburn_igopt_set_system_area(struct isoburn_imgen_opts *o,
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index 3b774031..f5ea28d7 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2012.06.12.113552"
+#define Xorriso_timestamP "2012.06.12.192702"