diff --git a/ChangeLog b/ChangeLog
index 6fc58dd460..c39785247d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Nov 10 16:09:43 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* signal.c (rb_f_kill): [DOC] mention known signal list.
+	  [ruby-core:66162] [Bug #10492]
+
 Mon Nov 10 14:17:58 2014  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
 
 	* lib/rdoc/*.rb: Update to RDoc 4.2.0.alpha(579a11c)
diff --git a/signal.c b/signal.c
index 5098b8ddb3..a3f4a20774 100644
--- a/signal.c
+++ b/signal.c
@@ -374,6 +374,8 @@ static void signal_enque(int sig);
  *  a POSIX signal name (either with or without a +SIG+ prefix). If _signal_ is
  *  negative (or starts with a minus sign), kills process groups instead of
  *  processes. Not all signals are available on all platforms.
+ *  The keys and values of +Signal.list+ are known signal names and numbers,
+ *  respectively.
  *
  *     pid = fork do
  *        Signal.trap("HUP") { puts "Ouch!"; exit }