diff --git a/libisoburn/isoburn.c b/libisoburn/isoburn.c
index 0a77c9b0..a0dacaaf 100644
--- a/libisoburn/isoburn.c
+++ b/libisoburn/isoburn.c
@@ -433,7 +433,7 @@ int isoburn_prepare_disc_aux(struct burn_drive *in_d, struct burn_drive *out_d,
  iso_write_opts_set_dir_rec_mtime(wopts, opts->dir_rec_mtime);
  iso_write_opts_set_aaip_susp_1_10(wopts, opts->aaip_susp_1_10);
  iso_write_opts_set_sort_files(wopts, opts->sort_files);
- iso_write_opts_set_record_md5(wopts, opts->session_md5, opts->file_md5);
+ iso_write_opts_set_record_md5(wopts, opts->session_md5, opts->file_md5 & 3);
  iso_write_opts_set_replace_mode(wopts, opts->replace_dir_mode,
                 opts->replace_file_mode, opts->replace_uid, opts->replace_gid);
  iso_write_opts_set_default_dir_mode(wopts, opts->dir_mode);
@@ -879,7 +879,7 @@ int isoburn_igopt_set_extensions(struct isoburn_imgen_opts *o, int ext)
  o->hardlinks= !!(ext & 8);
  o->aaip= !!(ext & 32);
  o->session_md5= !!(ext & 64);
- o->file_md5= !!(ext & 128);
+ o->file_md5= (ext & (128 | 256)) >> 7;
  return(1);
 }
 
@@ -888,7 +888,7 @@ int isoburn_igopt_get_extensions(struct isoburn_imgen_opts *o, int *ext)
 {
  *ext= (!!o->rockridge) | ((!!o->joliet)<<1) | ((!!o->iso1999)<<2) |
        ((!!o->hardlinks) << 3) | ((!!o->aaip) << 5) |
-       ((!!o->session_md5) << 6) | ((!!o->file_md5) << 7);
+       ((!!o->session_md5) << 6) | ((o->file_md5 & 3) << 7);
  return(1);
 }
 
diff --git a/libisoburn/isoburn.h b/libisoburn/isoburn.h
index 3ff8f4ca..4411e3ce 100644
--- a/libisoburn/isoburn.h
+++ b/libisoburn/isoburn.h
@@ -334,8 +334,10 @@ struct isoburn_imgen_opts {
     /* Produce and write a MD5 checksum of the whole session stream. */
     unsigned int session_md5 :1;
 
-    /* Produce and write MD5 checksums for each single IsoFile. */
-    unsigned int file_md5 :1;
+    /* Produce and write MD5 checksums for each single IsoFile.
+       See parameter files of iso_write_opts_set_record_md5().
+     */
+    unsigned int file_md5 :2;
 
     /* relaxed constraints */
 
diff --git a/libisoburn/libisoburn.h b/libisoburn/libisoburn.h
index c85acd16..a3b0d697 100644
--- a/libisoburn/libisoburn.h
+++ b/libisoburn/libisoburn.h
@@ -934,15 +934,22 @@ int isoburn_igopt_get_level(struct isoburn_imgen_opts *o, int *level);
            bit7= file_md5
                  @since 0.4.2
                  Produce and write MD5 checksums for each single IsoFile.
+           bit8= file_stability (only together with file_md5)
+                 @since 0.4.2
+                 Compute MD5 of each file before copying it into the image and
+                 compare this with the MD5 of the actual copying. If they do
+                 not match then issue MISHAP event.
+                 See also libisofs.h  iso_write_opts_set_record_md5()
     @return 1 success, <=0 failure
 */
-#define isoburn_igopt_rockridge      1
-#define isoburn_igopt_joliet         2
-#define isoburn_igopt_iso1999        4
-#define isoburn_igopt_hardlinks      8
-#define isoburn_igopt_aaip          32
-#define isoburn_igopt_session_md5   64
-#define isoburn_igopt_file_md5     128
+#define isoburn_igopt_rockridge         1
+#define isoburn_igopt_joliet            2
+#define isoburn_igopt_iso1999           4
+#define isoburn_igopt_hardlinks         8
+#define isoburn_igopt_aaip             32
+#define isoburn_igopt_session_md5      64
+#define isoburn_igopt_file_md5        128
+#define isoburn_igopt_file_stability  256
 int isoburn_igopt_set_extensions(struct isoburn_imgen_opts *o, int ext);
 int isoburn_igopt_get_extensions(struct isoburn_imgen_opts *o, int *ext);
 
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index c4d9cc54..65f11809 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2009.08.18.191013"
+#define Xorriso_timestamP "2009.08.19.180632"