diff --git a/ChangeLog b/ChangeLog
index abf081408a..6553b0e7bd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sat May 14 17:42:21 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
+
+	* process.c (rb_proc_times): improve documentation.
+	  [ruby-core:35785] fixes #4581, reported by Andrew Grimm.
+
 Sat May 14 12:12:54 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
 
 	* test/openssl/test_pkey_dsa.rb: Add basic tests and tests that 
diff --git a/process.c b/process.c
index d2a13e5509..0f60cfb940 100644
--- a/process.c
+++ b/process.c
@@ -5611,12 +5611,12 @@ p_gid_switch(VALUE obj)
  *  call-seq:
  *     Process.times   -> aStructTms
  *
- *  Returns a <code>Tms</code> structure (see <code>Struct::Tms</code>
- *  on page 388) that contains user and system CPU times for this
- *  process.
+ *  Returns a <code>Tms</code> structure (see <code>Struct::Tms</code>)
+ *  that contains user and system CPU times for this process,
+ *  and also for children processes.
  *
  *     t = Process.times
- *     [ t.utime, t.stime ]   #=> [0.0, 0.02]
+ *     [ t.utime, t.stime, t.cutime, t.cstime ]   #=> [0.0, 0.02, 0.00, 0.00]
  */
 
 VALUE