diff --git a/actionpack/lib/action_controller/railtie.rb b/actionpack/lib/action_controller/railtie.rb
index d7e8194bf6ed93bc88009cfea3920eabbd9cd465..f2c68432c1137a26f9a620b03afd3396831fae9c 100644
--- a/actionpack/lib/action_controller/railtie.rb
+++ b/actionpack/lib/action_controller/railtie.rb
@@ -20,7 +20,7 @@ class Railtie < Rails::Railtie #:nodoc:
     end
 
     initializer "action_controller.parameters_config" do |app|
-      ActionController::Parameters.permit_all_parameters = app.config.action_controller.delete(:permit_all_parameters)
+      ActionController::Parameters.permit_all_parameters = app.config.action_controller.delete(:permit_all_parameters) { false }
     end
 
     initializer "action_controller.set_configs" do |app|