diff --git a/ChangeLog b/ChangeLog
index 64a4592cbd..43b5160ca7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sat Dec 13 18:33:25 2014  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
+
+	* test/openssl/test_pkey_ec.rb: ignored tests with old OpenSSL.
+
 Sat Dec 13 18:01:57 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* signal.c (check_stack_overflow): check sp also on i386/x86_64
diff --git a/test/openssl/test_pkey_ec.rb b/test/openssl/test_pkey_ec.rb
index 5ceea4c867..1693ace01f 100644
--- a/test/openssl/test_pkey_ec.rb
+++ b/test/openssl/test_pkey_ec.rb
@@ -1,6 +1,6 @@
 require_relative 'utils'
 
-if defined?(OpenSSL::PKey::EC)
+if defined?(OpenSSL::TestUtils) && defined?(OpenSSL::PKey::EC)
 
 class OpenSSL::TestEC < Test::Unit::TestCase
   def setup