diff --git a/lib/pleroma/web/activity_pub/object_validators/emoji_react_validator.ex b/lib/pleroma/web/activity_pub/object_validators/emoji_react_validator.ex
index 80ec65cd7..bda67feee 100644
--- a/lib/pleroma/web/activity_pub/object_validators/emoji_react_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/emoji_react_validator.ex
@@ -8,6 +8,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator do
   alias Pleroma.Emoji
   alias Pleroma.Object
   alias Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes
+  alias Pleroma.Web.ActivityPub.Transmogrifier
 
   import Ecto.Changeset
   import Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations
@@ -52,6 +53,7 @@ def changeset(struct, data) do
   defp fix(data) do
     data =
       data
+      |> Transmogrifier.fix_tag()
       |> fix_emoji_qualification()
       |> CommonFixes.fix_actor()
       |> CommonFixes.fix_activity_addressing()
diff --git a/test/pleroma/web/activity_pub/transmogrifier/emoji_react_handling_test.exs b/test/pleroma/web/activity_pub/transmogrifier/emoji_react_handling_test.exs
index 977950434..b40e7f4da 100644
--- a/test/pleroma/web/activity_pub/transmogrifier/emoji_react_handling_test.exs
+++ b/test/pleroma/web/activity_pub/transmogrifier/emoji_react_handling_test.exs
@@ -37,7 +37,80 @@ test "it works for incoming emoji reactions" do
     assert match?([["👌", _, nil]], object.data["reactions"])
   end
 
-  test "it works for incoming custom emoji reactions" do
+  test "it works for incoming custom emoji with nil id" do
+    user = insert(:user)
+    other_user = insert(:user, local: false)
+    {:ok, activity} = CommonAPI.post(user, %{status: "hello"})
+
+    shortcode = "blobcatgoogly"
+    emoji = emoji_object(shortcode)
+    data = react_with_custom(activity.data["object"], other_user.ap_id, emoji)
+
+    {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
+
+    assert data["actor"] == other_user.ap_id
+    assert data["type"] == "EmojiReact"
+    assert data["object"] == activity.data["object"]
+    assert data["content"] == ":" <> shortcode <> ":"
+    [%{}] = data["tag"]
+
+    object = Object.get_by_ap_id(data["object"])
+
+    assert object.data["reaction_count"] == 1
+    assert match?([[^shortcode, _, _]], object.data["reactions"])
+  end
+
+  test "it works for incoming custom emoji with image url as id" do
+    user = insert(:user)
+    other_user = insert(:user, local: false)
+    {:ok, activity} = CommonAPI.post(user, %{status: "hello"})
+
+    shortcode = "blobcatgoogly"
+    imgurl = "https://example.org/emoji/a.png"
+    emoji = emoji_object(shortcode, imgurl, imgurl)
+    data = react_with_custom(activity.data["object"], other_user.ap_id, emoji)
+
+    {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
+
+    assert data["actor"] == other_user.ap_id
+    assert data["type"] == "EmojiReact"
+    assert data["object"] == activity.data["object"]
+    assert data["content"] == ":" <> shortcode <> ":"
+    assert [%{}] = data["tag"]
+
+    object = Object.get_by_ap_id(data["object"])
+
+    assert object.data["reaction_count"] == 1
+    assert match?([[^shortcode, _, ^imgurl]], object.data["reactions"])
+  end
+
+  test "it works for incoming custom emoji without tag array" do
+    user = insert(:user)
+    other_user = insert(:user, local: false)
+    {:ok, activity} = CommonAPI.post(user, %{status: "hello"})
+
+    shortcode = "blobcatgoogly"
+    imgurl = "https://example.org/emoji/b.png"
+    emoji = emoji_object(shortcode, imgurl, imgurl)
+    data = react_with_custom(activity.data["object"], other_user.ap_id, emoji, false)
+
+    assert %{} = data["tag"]
+
+    {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
+
+    assert data["actor"] == other_user.ap_id
+    assert data["type"] == "EmojiReact"
+    assert data["object"] == activity.data["object"]
+    assert data["content"] == ":" <> shortcode <> ":"
+    assert [%{}] = data["tag"]
+
+    object = Object.get_by_ap_id(data["object"])
+
+    assert object.data["reaction_count"] == 1
+    assert match?([[^shortcode, _, _]], object.data["reactions"])
+  end
+
+  test "it works for incoming custom emoji reactions from Misskey" do
     user = insert(:user)
     other_user = insert(:user, local: false)
     {:ok, activity} = CommonAPI.post(user, %{status: "hello"})
@@ -138,4 +211,27 @@ test "it reject invalid emoji reactions" do
 
     assert {:error, _} = Transmogrifier.handle_incoming(data)
   end
+
+  defp emoji_object(shortcode, id \\ nil, url \\ "https://example.org/emoji.png") do
+    %{
+      "type" => "Emoji",
+      "id" => id,
+      "name" => shortcode |> String.replace_prefix(":", "") |> String.replace_suffix(":", ""),
+      "icon" => %{
+        "type" => "Image",
+        "url" => url
+      }
+    }
+  end
+
+  defp react_with_custom(object_id, as_actor, emoji, tag_array \\ true) do
+    tag = if tag_array, do: [emoji], else: emoji
+
+    File.read!("test/fixtures/emoji-reaction.json")
+    |> Jason.decode!()
+    |> Map.put("object", object_id)
+    |> Map.put("actor", as_actor)
+    |> Map.put("content", ":" <> emoji["name"] <> ":")
+    |> Map.put("tag", tag)
+  end
 end