diff --git a/app/controllers/users/private_message_details_controller.rb b/app/controllers/users/private_message_details_controller.rb
index 8e7b31212..3a8f4e7fc 100644
--- a/app/controllers/users/private_message_details_controller.rb
+++ b/app/controllers/users/private_message_details_controller.rb
@@ -1,4 +1,5 @@
 class Users::PrivateMessageDetailsController < Users::BaseController
+  before_action :require_login
   before_action :private_user_resources!
 
   after_action :update_message_status, only: [:show]
diff --git a/app/controllers/users/private_messages_controller.rb b/app/controllers/users/private_messages_controller.rb
index 3a5635ef7..4f02b136f 100644
--- a/app/controllers/users/private_messages_controller.rb
+++ b/app/controllers/users/private_messages_controller.rb
@@ -1,4 +1,5 @@
 class Users::PrivateMessagesController < Users::BaseController
+  before_action :require_login
   before_action :private_user_resources!
   after_action :update_onclick_time!, only: [:index]