diff --git a/lib/activityobject.php b/lib/activityobject.php
index 0df9999454..0f151ec298 100644
--- a/lib/activityobject.php
+++ b/lib/activityobject.php
@@ -687,7 +687,7 @@ class ActivityObject
                 $avatarMediaLinks[] = $avatar->asArray();
             }
 
-            $object['avatars'] = $avatarMediaLinks; // extension
+            $object['avatarLinks'] = $avatarMediaLinks; // extension
 
             // image
             $object['image']  = $imgLink->asArray();