diff --git a/lib/active_model_serializers/test/schema.rb b/lib/active_model_serializers/test/schema.rb
index 1f4dccc0..a0001586 100644
--- a/lib/active_model_serializers/test/schema.rb
+++ b/lib/active_model_serializers/test/schema.rb
@@ -60,11 +60,11 @@ module ActiveModelSerializers
         attr_reader :document_store
 
         def controller_path
-          request.filtered_parameters[:controller]
+          request.filtered_parameters.with_indifferent_access[:controller]
         end
 
         def action
-          request.filtered_parameters[:action]
+          request.filtered_parameters.with_indifferent_access[:action]
         end
 
         def schema_directory
diff --git a/test/support/rails_app.rb b/test/support/rails_app.rb
index 0bbae1fe..43324b78 100644
--- a/test/support/rails_app.rb
+++ b/test/support/rails_app.rb
@@ -6,6 +6,8 @@ module ActiveModelSerializers
       config.active_support.test_order = :random
       config.action_controller.perform_caching = true
       config.action_controller.cache_store = :memory_store
+
+      config.filter_parameters += [:password]
     end
 
     app.routes.default_url_options = { host: 'example.com' }