diff --git a/ChangeLog b/ChangeLog
index 8307a01f..3a1a6a49 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-07-15  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	Documented --min-split-size option in man page.
+	* doc/aria2c.1.txt
+
 2010-07-15  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	Added --min-split-size=SIZE option.  aria2 does not split less
diff --git a/doc/aria2c.1 b/doc/aria2c.1
index cc4de4f2..4600a221 100644
--- a/doc/aria2c.1
+++ b/doc/aria2c.1
@@ -2,12 +2,12 @@
 .\"     Title: aria2c
 .\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
 .\" Generator: DocBook XSL Stylesheets v1.75.2 <http://docbook.sf.net/>
-.\"      Date: 07/14/2010
+.\"      Date: 07/15/2010
 .\"    Manual: Aria2 Manual
 .\"    Source: Aria2 1.9.5
 .\"  Language: English
 .\"
-.TH "ARIA2C" "1" "07/14/2010" "Aria2 1\&.9\&.5" "Aria2 Manual"
+.TH "ARIA2C" "1" "07/15/2010" "Aria2 1\&.9\&.5" "Aria2 Manual"
 .\" -----------------------------------------------------------------
 .\" * Define some portability stuff
 .\" -----------------------------------------------------------------
@@ -1213,6 +1213,16 @@ option\&. Default:
 \fI0\fR
 .RE
 .PP
+\fB\-\-min\-split\-size\fR=SIZE
+.RS 4
+aria2 does not split less than 2*SIZE byte range\&. For example, let\(cqs consider downloading 20MiB file\&. If SIZE is 10M, aria2 can split file into 2 range [0\-10MiB) and [10MiB\-20MiB) and download it using 2 sources(if
+\fB\-\-split\fR
+>= 2, of course)\&. If SIZE is 15M, since 2*15M > 20MiB, aria2 does not split file and download it using 1 source\&. Possible Values:
+\fI1M\fR\-\fI1024M\fR
+Default:
+\fI20M\fR
+.RE
+.PP
 \fB\-\-log\-level\fR=LEVEL
 .RS 4
 Set log level to output\&. LEVEL is either
diff --git a/doc/aria2c.1.html b/doc/aria2c.1.html
index 295ccb2c..32e10a24 100644
--- a/doc/aria2c.1.html
+++ b/doc/aria2c.1.html
@@ -2039,6 +2039,19 @@ name.</td>
 </p>
 </dd>
 <dt class="hdlist1">
+<strong>--min-split-size</strong>=SIZE
+</dt>
+<dd>
+<p>
+  aria2 does not split less than 2*SIZE byte range.  For example,
+  let&#8217;s consider downloading 20MiB file. If SIZE is 10M, aria2 can
+  split file into 2 range [0-10MiB) and [10MiB-20MiB) and download it
+  using 2 sources(if <strong>--split</strong> &gt;= 2, of course).  If SIZE is 15M,
+  since 2*15M &gt; 20MiB, aria2 does not split file and download it using
+  1 source.  Possible Values: <em>1M</em>-<em>1024M</em> Default: <em>20M</em>
+</p>
+</dd>
+<dt class="hdlist1">
 <strong>--log-level</strong>=LEVEL
 </dt>
 <dd>
@@ -4202,7 +4215,7 @@ files in the program, then also delete it here.</p></div>
 <div id="footnotes"><hr /></div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2010-07-14 20:42:14 JST
+Last updated 2010-07-15 20:42:15 JST
 </div>
 </div>
 </body>
diff --git a/doc/aria2c.1.txt b/doc/aria2c.1.txt
index 8f294f15..b3d5a24f 100644
--- a/doc/aria2c.1.txt
+++ b/doc/aria2c.1.txt
@@ -825,6 +825,15 @@ name.
   given URIs do not support resume.  See *--always-resume* option.
   Default: '0'
 
+*--min-split-size*=SIZE::
+
+  aria2 does not split less than 2*SIZE byte range.  For example,
+  let's consider downloading 20MiB file. If SIZE is 10M, aria2 can
+  split file into 2 range [0-10MiB) and [10MiB-20MiB) and download it
+  using 2 sources(if *--split* >= 2, of course).  If SIZE is 15M,
+  since 2*15M > 20MiB, aria2 does not split file and download it using
+  1 source.  Possible Values: '1M'-'1024M' Default: '20M'
+
 *--log-level*=LEVEL::
   Set log level to output.
   LEVEL is either 'debug', 'info', 'notice', 'warn' or 'error'.