diff --git a/ChangeLog b/ChangeLog
index 4bb5c1534f..09deb71206 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue May 31 21:28:33 2011  Tanaka Akira  <akr@fsij.org>
+
+	* test/ruby/test_signal.rb (TestSignal#test_signal_requiring):
+	  initialize SIGINT handler.
+
 Tue May 31 17:03:24 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
 
 	* lib/net/http.rb, lib/net/protocol.rb: Allow to configure to wait
diff --git a/test/ruby/test_signal.rb b/test/ruby/test_signal.rb
index e2aad73b63..8cdaffb7d3 100644
--- a/test/ruby/test_signal.rb
+++ b/test/ruby/test_signal.rb
@@ -203,6 +203,7 @@ class TestSignal < Test::Unit::TestCase
     t.puts "sleep"
     t.close
     error = IO.popen([EnvUtil.rubybin, "-e", <<EOS, t.path]) do |child|
+trap(:INT, "DEFAULT")
 th = Thread.new do
   begin
     require ARGV[0]