diff --git a/test/openssl/test_cipher.rb b/test/openssl/test_cipher.rb
index 30220d169c..81ded0ae52 100644
--- a/test/openssl/test_cipher.rb
+++ b/test/openssl/test_cipher.rb
@@ -104,7 +104,12 @@ class OpenSSL::TestCipher < Test::Unit::TestCase
     def test_ciphers
       OpenSSL::Cipher.ciphers.each{|name|
         next if /netbsd/ =~ RUBY_PLATFORM && /idea|rc5/i =~ name
-        assert(OpenSSL::Cipher::Cipher.new(name).is_a?(OpenSSL::Cipher::Cipher))
+        begin
+          assert_kind_of(OpenSSL::Cipher::Cipher, OpenSSL::Cipher::Cipher.new(name))
+        rescue OpenSSL::Cipher::CipherError => e
+          next if /wrap\z/ =~ name and e.message == 'wrap mode not allowed'
+          raise
+        end
       }
     end