diff --git a/test/akismet_test.rb b/test/akismet_test.rb
index <HASH>..<HASH> 100644
--- a/test/akismet_test.rb
+++ b/test/akismet_test.rb
@@ -1,6 +1,6 @@
 require 'test_helper'
 
-class AkismetTest < Test
+class AkismetTest < Minitest::Test
 
   def setup
     Akismet.api_key = API_KEY
diff --git a/test/client_test.rb b/test/client_test.rb
index <HASH>..<HASH> 100644
--- a/test/client_test.rb
+++ b/test/client_test.rb
@@ -1,7 +1,7 @@
 require 'test_helper'
 require 'date'
 
-class ClientTest < Test
+class ClientTest < Minitest::Test
 
   APP_URL = 'http://example.com'
   APP_NAME = 'Akismet tests'
diff --git a/test/test_helper.rb b/test/test_helper.rb
index <HASH>..<HASH> 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -3,4 +3,3 @@ require 'akismet'
 
 API_KEY = ENV['AKISMET_API_KEY'] || raise("Set the AKISMET_API_KEY environment variable to an API key obtained from akismet.com")
 
-Test = defined?(Minitest::Test) ? Minitest::Test : MiniTest::Unit::TestCase
Always use Minitest::Test