diff --git a/ChangeLog b/ChangeLog
index 3ba6c90512..4ab3fe8596 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Apr 29 18:39:51 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/thwait.rb (ThreadsWait#join): refined rdoc again.
+	  [ruby-core:29863] [ruby-dev:41092]
+
 Thu Apr 29 14:46:00 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* test/ruby: use more descriptive assertions.
diff --git a/lib/thwait.rb b/lib/thwait.rb
index 7ac033d30d..963ff4d1b6 100644
--- a/lib/thwait.rb
+++ b/lib/thwait.rb
@@ -74,8 +74,8 @@ class ThreadsWait
   end
 
   #
-  # Waits for specified threads to terminate, and returns when any
-  # thread terminated.
+  # Waits for specified threads to terminate, and returns when one of
+  # the threads terminated.
   #
   def join(*threads)
     join_nowait(*threads)