diff --git a/plugins/ActivityPub/lib/models/Activitypub_notice.php b/plugins/ActivityPub/lib/models/Activitypub_notice.php
index f799e55656..e827def89d 100644
--- a/plugins/ActivityPub/lib/models/Activitypub_notice.php
+++ b/plugins/ActivityPub/lib/models/Activitypub_notice.php
@@ -123,7 +123,7 @@ class Activitypub_notice
      * @throws Exception
      * @author Diogo Cordeiro <diogo@fc.up.pt>
      */
-    public static function create_notice(array $object, Profile $actor_profile = null, bool $directMessage = false): Notice
+    public static function create_notice(array $object, Profile $actor_profile, bool $directMessage = false): Notice
     {
         $id = $object['id'];                                // int
         $url = isset($object['url']) ? $object['url'] : $id; // string
@@ -141,17 +141,6 @@ class Activitypub_notice
             $settings['longitude'] = $object['longitude'];
         }
 
-        // Ensure Actor Profile
-        if (is_null($actor_profile)) {
-            if (isset($object['attributedTo'])) {
-                $actor_profile = ActivityPub_explorer::get_profile_from_url($object['attributedTo']);
-            } elseif (isset($object['actor'])) {
-                $actor_profile = ActivityPub_explorer::get_profile_from_url($object['actor']);
-            } else {
-                throw new Exception("A notice can't be created without an actor.");
-            }
-        }
-
         $act = new Activity();
         $act->verb = ActivityVerb::POST;
         $act->time = time();