diff --git a/app/lib/activitypub/activity/create.rb b/app/lib/activitypub/activity/create.rb
index cf054a4fe..4493693aa 100644
--- a/app/lib/activitypub/activity/create.rb
+++ b/app/lib/activitypub/activity/create.rb
@@ -453,6 +453,10 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
   rescue
     nil
   end
+
+  SPAM_FILTER_MINIMUM_FOLLOWERS = ENV.fetch('SPAM_FILTER_MINIMUM_FOLLOWERS', 0).to_i
+  SPAM_FILTER_MINIMUM_CREATE_DAYS = ENV.fetch('SPAM_FILTER_MINIMUM_CREATE_DAYS', 1).to_i
+  SPAM_FILTER_MINIMUM_MENTIONS = ENV.fetch('SPAM_FILTER_MINIMUM_MENTIONS', 1).to_i
   def like_a_spam?
     (
       !@status.account.local? &&