2 files changed, 7 insertions, 1 deletions
diff --git a/lib/pleroma/web/activity_pub/object_validators/article_note_page_validator.ex b/lib/pleroma/web/activity_pub/object_validators/article_note_page_validator.ex
index ca335bc8a..57c8d1dc0 100644
--- a/lib/pleroma/web/activity_pub/object_validators/article_note_page_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/article_note_page_validator.ex
@@ -65,6 +65,11 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.ArticleNotePageValidator do
 
   defp fix_replies(data), do: data
 
+  def fix_attachments(%{"attachment" => attachment} = data) when is_map(attachment),
+    do: Map.put(data, "attachment", [attachment])
+
+  def fix_attachments(data), do: data
+
   defp fix(data) do
     data
     |> CommonFixes.fix_actor()
@@ -72,6 +77,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.ArticleNotePageValidator do
     |> fix_url()
     |> fix_tag()
     |> fix_replies()
+    |> fix_attachments()
     |> Transmogrifier.fix_emoji()
     |> Transmogrifier.fix_content_map()
   end
diff --git a/lib/pleroma/web/activity_pub/object_validators/attachment_validator.ex b/lib/pleroma/web/activity_pub/object_validators/attachment_validator.ex
index 8b641d88d..cf6e407e0 100644
--- a/lib/pleroma/web/activity_pub/object_validators/attachment_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/attachment_validator.ex
@@ -59,7 +59,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AttachmentValidator do
   end
 
   def fix_media_type(data) do
-    Map.put_new(data, "mediaType", data["mimeType"])
+    Map.put_new(data, "mediaType", data["mimeType"] || "application/octet-stream")
   end
 
   defp handle_href(href, mediaType, data) do