diff --git a/app/models/spree/app_configuration_decorator.rb b/app/models/spree/app_configuration_decorator.rb
index 80988ce7c1..840ce4f6a4 100644
--- a/app/models/spree/app_configuration_decorator.rb
+++ b/app/models/spree/app_configuration_decorator.rb
@@ -21,6 +21,7 @@ Spree::AppConfiguration.class_eval do
   preference :account_invoices_monthly_cap, :decimal, default: 0
   preference :account_invoices_tax_rate, :decimal, default: 0
   preference :shop_trial_length_days, :integer, default: 30
+  preference :minimum_billable_turnover, :integer, default: -1
 
   # Monitoring
   preference :last_job_queue_heartbeat_at, :string, default: nil