diff --git a/app/models/activity_pub/object.rb b/app/models/activity_pub/object.rb
index ec759e3e..898d5375 100644
--- a/app/models/activity_pub/object.rb
+++ b/app/models/activity_pub/object.rb
@@ -5,7 +5,6 @@ class ActivityPub
   class Object < ApplicationRecord
     include ActivityPub::Concerns::JsonLdConcern
 
-    belongs_to :actor
     has_many :activity_pubs, as: :object
   end
 end