diff --git a/activesupport/test/core_ext/class/attribute_test.rb b/activesupport/test/core_ext/class/attribute_test.rb
index 6319feaf0d..b9071b5ea0 100644
--- a/activesupport/test/core_ext/class/attribute_test.rb
+++ b/activesupport/test/core_ext/class/attribute_test.rb
@@ -112,7 +112,7 @@ class ClassAttributeTest < ActiveSupport::TestCase
   end
 
   test "setter returns set value" do
-    val = @klass.send(:setting=, 1)
+    val = @klass.public_send(:setting=, 1)
     assert_equal 1, val
   end
 end