diff --git a/app/models/hack.rb b/app/models/hack.rb
index 915ff6f9e..e1b2b225e 100644
--- a/app/models/hack.rb
+++ b/app/models/hack.rb
@@ -56,7 +56,7 @@ class Hack < ApplicationRecord
   private
   def send_delete_tiding
     base_attrs = {
-        user_id: user_id, viewed: 0, tiding_type: 'System', trigger_user_id: current_user.id,
+        user_id: user_id, viewed: 0, tiding_type: 'System', trigger_user_id: User.current.id,
         parent_container_type: "HackDelete"
     }
     tidings.create!(base_attrs)
diff --git a/db/migrate/20191225035117_modify_open_or_not_for_hacks.rb b/db/migrate/20191225035117_modify_open_or_not_for_hacks.rb
new file mode 100644
index 000000000..6b67d2dfd
--- /dev/null
+++ b/db/migrate/20191225035117_modify_open_or_not_for_hacks.rb
@@ -0,0 +1,5 @@
+class ModifyOpenOrNotForHacks < ActiveRecord::Migration[5.2]
+  def change
+    change_column :hacks, :open_or_not, :boolean, :default => false
+  end
+end