diff --git a/ChangeLog b/ChangeLog
index 39603706..36c9c2e1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2009-09-19  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	Updated the help message for --daemon option.
+	* doc/aria2c.1.txt
+	* src/usage_text.h
+
 2009-09-19  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	Added our own daemon() function for systems which desn't have
diff --git a/src/usage_text.h b/src/usage_text.h
index 8f14f79a..8f7da985 100644
--- a/src/usage_text.h
+++ b/src/usage_text.h
@@ -41,7 +41,10 @@ _(" -o, --out=FILE               The file name of the downloaded file.")
 _(" -l, --log=LOG                The file name of the log file. If '-' is\n"\
   "                              specified, log is written to stdout.")
 #define TEXT_DAEMON \
-_(" -D, --daemon                 Run as daemon.")
+_(" -D, --daemon                 Run as daemon. The current working directory will\n"\
+  "                              be changed to \"/\" and standard input, standard\n"\
+  "                              output and standard error will be redirected to\n"\
+  "                              \"/dev/null\".")
 #define TEXT_SPLIT \
 _(" -s, --split=N                Download a file using N connections. If more\n"\
   "                              than N URLs are given, first N URLs are used and\n"\