diff --git a/app/models/actor_moderation.rb b/app/models/actor_moderation.rb
index 5d44a021..e06ffbb1 100644
--- a/app/models/actor_moderation.rb
+++ b/app/models/actor_moderation.rb
@@ -9,7 +9,7 @@ class ActorModeration < ApplicationRecord
   IGNORED_STATES = []
 
   belongs_to :site
-  belongs_to :remote_flag, class_name: 'ActivityPub::RemoteFlag'
+  belongs_to :remote_flag, optional: true, class_name: 'ActivityPub::RemoteFlag'
   belongs_to :actor, class_name: 'ActivityPub::Actor'
 
   accepts_nested_attributes_for :remote_flag