diff --git a/ChangeLog b/ChangeLog
index 6a37725567..c6c7e2f324 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -19,7 +19,7 @@ Sun May  8 05:19:37 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
 Sun May  8 00:13:05 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
-	* test/io/wait/test_io_wait.rb: use Socket.pair instaed of pipe.
+	* test/io/wait/test_io_wait.rb: use Socket.pair instead of pipe.
 	  Windows can only treat a socket.
 
 Sat May  7 22:43:48 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>