diff --git a/actionpack/lib/action_view/test_case.rb b/actionpack/lib/action_view/test_case.rb
index 04073c73cc..b7fd6ec7e1 100644
--- a/actionpack/lib/action_view/test_case.rb
+++ b/actionpack/lib/action_view/test_case.rb
@@ -205,6 +205,7 @@ module ActionView
         :@rendered,
         :@request,
         :@routes,
+        :@tagged_logger,
         :@templates,
         :@options,
         :@test_passed,