diff --git a/app/controllers/customization_controller.rb b/app/controllers/customization_controller.rb
index c8106d64..4ff12eff 100644
--- a/app/controllers/customization_controller.rb
+++ b/app/controllers/customization_controller.rb
@@ -2,6 +2,8 @@ class CustomizationController < ApplicationController
   before_action :verify_content_type_can_be_toggled, only: [:toggle_content_type]
 
   def content_types
+    return redirect_to root_path unless user_signed_in?
+
     @all_content_types = Rails.application.config.content_types[:all]
     @premium_content_types = Rails.application.config.content_types[:premium]
     @my_activators = current_user.user_content_type_activators.pluck(:content_type)