2 files changed, 3 insertions, 3 deletions
diff --git a/activesupport/test/core_ext/thread_test.rb b/activesupport/test/core_ext/thread_test.rb
index b58f59a8d4..230c1203ad 100644
--- a/activesupport/test/core_ext/thread_test.rb
+++ b/activesupport/test/core_ext/thread_test.rb
@@ -39,14 +39,14 @@ class ThreadExt < ActiveSupport::TestCase
   end
 
   def test_thread_variable?
-    refute Thread.new { Thread.current.thread_variable?("foo") }.join.value
+    assert_not Thread.new { Thread.current.thread_variable?("foo") }.join.value
     t = Thread.new {
       Thread.current.thread_variable_set("foo", "bar")
     }.join
 
     assert t.thread_variable?("foo")
     assert t.thread_variable?(:foo)
-    refute t.thread_variable?(:bar)
+    assert_not t.thread_variable?(:bar)
   end
 
   def test_thread_variable_strings_and_symbols_are_the_same_key
diff --git a/activesupport/test/string_inquirer_test.rb b/activesupport/test/string_inquirer_test.rb
index 94d5fe197d..a2ed577eb0 100644
--- a/activesupport/test/string_inquirer_test.rb
+++ b/activesupport/test/string_inquirer_test.rb
@@ -10,7 +10,7 @@ class StringInquirerTest < ActiveSupport::TestCase
   end
 
   def test_miss
-    refute @string_inquirer.development?
+    assert_not @string_inquirer.development?
   end
 
   def test_missing_question_mark