diff --git a/ChangeLog b/ChangeLog
index c5f6dac7b5..795e5ddad4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Fri Jul 29 23:56:32 2011  Tanaka Akira  <akr@fsij.org>
+
+	* lib/securerandom.rb: call OpenSSL::Random.seed at the 
+	  SecureRandom.random_bytes call.
+	  based on the patch by Masahiro Tomita.  [ruby-dev:44270] 
+
 Fri Jul 29 23:53:48 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* array.c (rb_ary_set_len): new function to set array length.
diff --git a/lib/securerandom.rb b/lib/securerandom.rb
index d238a35406..04e8bc205e 100644
--- a/lib/securerandom.rb
+++ b/lib/securerandom.rb
@@ -57,7 +57,7 @@ module SecureRandom
     n ||= 16
 
     if defined? OpenSSL::Random
-      @pid = $$ if !defined?(@pid)
+      @pid = 0 if !defined?(@pid)
       pid = $$
       if @pid != pid
         now = Time.now