diff --git a/ChangeLog b/ChangeLog
index 8f9936e2da..b447b5906b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Sat Dec 15 08:02:11 2012  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* test/ruby/test_thread.rb (TestThread::Thread::new.): remove
+	  th.abort_on_exception change. Test template shouldn't change
+	  global flag. It prevent to test a normal case.
+
 Sat Dec 15 06:15:14 2012  Eric Hodel  <drbrain@segment7.net>
 
 	* configure.in (HAVE_GCC_ATOMIC_BUILTINS):  Set -march=i486 to enable
diff --git a/test/ruby/test_thread.rb b/test/ruby/test_thread.rb
index d06a7c80b8..71b400d421 100644
--- a/test/ruby/test_thread.rb
+++ b/test/ruby/test_thread.rb
@@ -7,7 +7,6 @@ class TestThread < Test::Unit::TestCase
     Threads = []
     def self.new(*)
       th = super
-      th.abort_on_exception = true
       Threads << th
       th
     end