diff --git a/activemodel/test/cases/validations/confirmation_validation_test.rb b/activemodel/test/cases/validations/confirmation_validation_test.rb
index c1431548f75c6eaac8acc655596e47efc7629ddd..c56bf1c0adb2b0507e08077241b9fe5e7b8199ca 100644
--- a/activemodel/test/cases/validations/confirmation_validation_test.rb
+++ b/activemodel/test/cases/validations/confirmation_validation_test.rb
@@ -104,4 +104,18 @@ def title_confirmation=(value)
     assert_equal "expected title", model.title_confirmation,
      "confirmation validation should not override the writer"
   end
+
+  def test_title_confirmation_with_case_sensitive_option_true
+    Topic.validates_confirmation_of(:title, case_sensitive: true)
+
+    t = Topic.new(title: "title", title_confirmation: "Title")
+    assert t.invalid?
+  end
+
+  def test_title_confirmation_with_case_sensitive_option_false
+    Topic.validates_confirmation_of(:title, case_sensitive: false)
+
+    t = Topic.new(title: "title", title_confirmation: "Title")
+    assert t.valid?
+  end
 end