diff --git a/ChangeLog b/ChangeLog
index 5d67e2a49a..88669d2bc5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Apr 22 22:56:42 2010  Yusuke Endoh  <mame@tsg.ne.jp>
+
+	* bootstraptest/test_thread.rb: fix test.  [Bug #2342]
+
 Thu Apr 22 21:50:17 2010  Keiju Ishitsuka  <keiju@ruby-lang.org>
 
 	* lib/irb/ext/multi-irb.rb: fix multi-irb running
diff --git a/bootstraptest/test_thread.rb b/bootstraptest/test_thread.rb
index a7478fcd2c..56c77259cf 100644
--- a/bootstraptest/test_thread.rb
+++ b/bootstraptest/test_thread.rb
@@ -174,9 +174,9 @@ assert_equal %q{[true, nil, true]}, %q{
   $a = $~
   Thread.new{
     $b = $~
-    /a/ =~ 'a'
+    /b/ =~ 'b'
     $c = $~
-  }
+  }.join
   $d = $~
   [$a == $d, $b, $c != $d]
 }