diff --git a/activesupport/test/descendants_tracker_test.rb b/activesupport/test/descendants_tracker_test.rb
index 3a424180dee673579fd1f523003573ead29f7ec9..ff24e310de74f0b1e291a43cc2f4c91326caf8e9 100644
--- a/activesupport/test/descendants_tracker_test.rb
+++ b/activesupport/test/descendants_tracker_test.rb
@@ -35,7 +35,7 @@ def test_direct_descendants
   end
 
   def test_clear_with_autoloaded_parent_children_and_granchildren
-    mark_as_autoloaded *ALL do
+    mark_as_autoloaded(*ALL) do
       ActiveSupport::DescendantsTracker.clear
       assert ActiveSupport::DescendantsTracker.descendants.slice(*ALL).empty?
     end