diff --git a/libisoburn/trunk/xorriso/xorriso.1 b/libisoburn/trunk/xorriso/xorriso.1
index 056e7297..9f455423 100644
--- a/libisoburn/trunk/xorriso/xorriso.1
+++ b/libisoburn/trunk/xorriso/xorriso.1
@@ -2,7 +2,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH XORRISO 1 "March, 11, 2008"
+.TH XORRISO 1 "March, 29, 2008"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -992,7 +992,7 @@ existing directory and all its subordinates.
 Set the threshold for automatic splitting of regular files. Such splitting
 maps a large disk file onto a ISO directory with several part files in it.
 This is necessary if the size of the disk file exceeds 4 GiB - 1.
-Older operating systems can handle files only if they are 2 GiB - 1.
+Older operating systems can handle files only if they are smaller than 2 GiB.
 See also option -cut_out for more information about file parts.
 .br
 Default is 0 which will exclude files >= 4 GiB by a FAILURE event.
diff --git a/libisoburn/trunk/xorriso/xorriso.c b/libisoburn/trunk/xorriso/xorriso.c
index a954b35d..c3229b36 100644
--- a/libisoburn/trunk/xorriso/xorriso.c
+++ b/libisoburn/trunk/xorriso/xorriso.c
@@ -9414,9 +9414,10 @@ int Xorriso_option_help(struct XorrisO *xorriso, int flag)
 "",
 "  -follow \"on\"|\"pattern:param:link:mount:limit=#\"|\"default\"|\"off\"",
 "                 Follow symbolic links and mount points within disk_path.",
-"",
 "  -overwrite \"on\"|\"nondir\"|\"off\"",
 "                 Allow or disallow to overwrite existing files in ISO image.",
+"  -split_size number[\"k\"|\"m\"]",
+"                 Set the threshold for automatic splitting of regular files.",
 "  -reassure \"on\"|\"tree\"|\"off\"",
 "                 If \"on\" then ask the user for \"y\" or \"n\" with any",
 "                 file before deleting or overwriting it in the ISO image.",
diff --git a/libisoburn/trunk/xorriso/xorriso_timestamp.h b/libisoburn/trunk/xorriso/xorriso_timestamp.h
index c91c8a77..f2664785 100644
--- a/libisoburn/trunk/xorriso/xorriso_timestamp.h
+++ b/libisoburn/trunk/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2008.03.29.164038"
+#define Xorriso_timestamP "2008.03.31.081347"