diff --git a/ChangeLog b/ChangeLog
index a79898f14c..8a5be7c3d6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,7 +1,7 @@
 Wed Dec  5 04:04:02 2012  Masaya Tarui  <tarui@ruby-lang.org>
 
 	* test/ruby/test_thread.rb (test_async_interrupt_blocking): bugfix
-	  about defared check
+	  about defered check
 
 Wed Dec  5 03:35:37 2012  Masaya Tarui  <tarui@ruby-lang.org>
 
@@ -9,7 +9,7 @@ Wed Dec  5 03:35:37 2012  Masaya Tarui  <tarui@ruby-lang.org>
         * thread.c (sleep_forever): check RUBY_VM_CHECK_INTS_BLOCKING first.
         * thread.c (sleep_timeval): ditto.
         * test/ruby/test_thread.rb (test_async_interrupt_blocking): add a test
-          exceptions are correctly defared and raised on :on_blocking context.
+          exceptions are correctly defered and raised on :on_blocking context.
 
 Wed Dec  5 02:36:10 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>