diff --git a/lib/pleroma/web/activity_pub/transmogrifier.ex b/lib/pleroma/web/activity_pub/transmogrifier.ex
index 9cd3de705..db848f657 100644
--- a/lib/pleroma/web/activity_pub/transmogrifier.ex
+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
@@ -202,21 +202,6 @@ def fix_context(object) do
     |> Map.put("conversation", context)
   end
 
-  def fix_attachments(%{"attachment" => attachment} = object) when is_list(attachment) do
-    attachments =
-      Enum.map(attachment, fn data ->
-        media_type = data["mediaType"] || data["mimeType"]
-        href = data["url"] || data["href"]
-        url = [%{"type" => "Link", "mediaType" => media_type, "href" => href}]
-
-        data
-        |> Map.put("mediaType", media_type)
-        |> Map.put("url", url)
-      end)
-
-    Map.put(object, "attachment", attachments)
-  end
-
   def fix_attachments(%{"attachment" => attachment} = object) when is_map(attachment) do
     object
     |> Map.put("attachment", [attachment])
diff --git a/test/web/activity_pub/activity_pub_controller_test.exs b/test/web/activity_pub/activity_pub_controller_test.exs
index 2bd494a37..01c955c0a 100644
--- a/test/web/activity_pub/activity_pub_controller_test.exs
+++ b/test/web/activity_pub/activity_pub_controller_test.exs
@@ -1250,7 +1250,9 @@ test "POST /api/ap/upload_media", %{conn: conn} do
       assert object["name"] == desc
       assert object["type"] == "Document"
       assert object["actor"] == user.ap_id
-      assert [%{"href" => object_href}] = object["url"]
+      assert [%{"href" => object_href, "mediaType" => object_mediatype}] = object["url"]
+      assert is_binary(object_href)
+      assert object_mediatype == "image/jpeg"
 
       activity_request = %{
         "@context" => "https://www.w3.org/ns/activitystreams",
@@ -1274,11 +1276,19 @@ test "POST /api/ap/upload_media", %{conn: conn} do
       assert activity_response["object"]
       assert activity_response["actor"] == user.ap_id
 
-      assert %Object{data: %{"attachment" => [attachment]}} = Object.normalize(activity_response["object"])
+      assert %Object{data: %{"attachment" => [attachment]}} =
+               Object.normalize(activity_response["object"])
+
       assert attachment["type"] == "Document"
       assert attachment["name"] == desc
-      assert [%{"href" => attachment_href}] = attachment["url"]
-      assert attachment_href == object_href
+
+      assert [
+               %{
+                 "href" => ^object_href,
+                 "type" => "Link",
+                 "mediaType" => ^object_mediatype
+               }
+             ] = attachment["url"]
 
       # Fails if unauthenticated
       conn