diff --git a/app/controllers/alchemy/admin/pages_controller.rb b/app/controllers/alchemy/admin/pages_controller.rb
index db655fed74..5dea9fce6f 100644
--- a/app/controllers/alchemy/admin/pages_controller.rb
+++ b/app/controllers/alchemy/admin/pages_controller.rb
@@ -9,9 +9,9 @@ class PagesController < ResourcesController
 
       before_action :load_resource, except: [:index, :flush, :new, :create, :copy_language_tree, :link]
 
-      authorize_resource class: Alchemy::Page, except: [:index, :tree]
+      authorize_resource class: Alchemy::Page, except: [:index]
 
-      before_action only: [:index, :tree, :flush, :new, :create, :copy_language_tree] do
+      before_action only: [:index, :flush, :new, :create, :copy_language_tree] do
         authorize! :index, :alchemy_admin_pages
       end
 
diff --git a/spec/dummy/config/environments/development.rb b/spec/dummy/config/environments/development.rb
index be8fb69b55..f7762923f9 100644
--- a/spec/dummy/config/environments/development.rb
+++ b/spec/dummy/config/environments/development.rb
@@ -37,6 +37,9 @@
     config.cache_store = :null_store
   end
 
+  # Raise error when a before_action's only/except options reference missing actions.
+  config.action_controller.raise_on_missing_callback_actions = true
+
   # Don't care if the mailer can't send.
   config.action_mailer.raise_delivery_errors = false
 
diff --git a/spec/dummy/config/environments/test.rb b/spec/dummy/config/environments/test.rb
index b2ce241857..b830628079 100644
--- a/spec/dummy/config/environments/test.rb
+++ b/spec/dummy/config/environments/test.rb
@@ -38,6 +38,9 @@
   # Disable request forgery protection in test environment.
   config.action_controller.allow_forgery_protection = true
 
+  # Raise error when a before_action's only/except options reference missing actions.
+  config.action_controller.raise_on_missing_callback_actions = true
+
   config.action_mailer.perform_caching = false
 
   # Tell Action Mailer not to deliver emails to the real world.