diff --git a/lib/pleroma/migration_helper.ex b/lib/pleroma/migration_helper/notification_backfill.ex
similarity index 97%
rename from lib/pleroma/migration_helper.ex
rename to lib/pleroma/migration_helper/notification_backfill.ex
index a20d27a01..09647d12a 100644
--- a/lib/pleroma/migration_helper.ex
+++ b/lib/pleroma/migration_helper/notification_backfill.ex
@@ -2,7 +2,7 @@
 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
-defmodule Pleroma.MigrationHelper do
+defmodule Pleroma.MigrationHelper.NotificationBackfill do
   alias Pleroma.Notification
   alias Pleroma.Object
   alias Pleroma.Repo
diff --git a/priv/repo/migrations/20200602125218_backfill_notification_types.exs b/priv/repo/migrations/20200602125218_backfill_notification_types.exs
index 58943fad0..996d721ee 100644
--- a/priv/repo/migrations/20200602125218_backfill_notification_types.exs
+++ b/priv/repo/migrations/20200602125218_backfill_notification_types.exs
@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.BackfillNotificationTypes do
   use Ecto.Migration
 
   def up do
-    Pleroma.MigrationHelper.fill_in_notification_types()
+    Pleroma.MigrationHelper.NotificationBackfill.fill_in_notification_types()
   end
 
   def down do
diff --git a/test/migration_helper_test.exs b/test/migration_helper/notification_backfill_test.exs
similarity index 91%
rename from test/migration_helper_test.exs
rename to test/migration_helper/notification_backfill_test.exs
index 1c8173987..2a62a2b00 100644
--- a/test/migration_helper_test.exs
+++ b/test/migration_helper/notification_backfill_test.exs
@@ -2,11 +2,11 @@
 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
-defmodule Pleroma.MigrationHelperTest do
+defmodule Pleroma.MigrationHelper.NotificationBackfillTest do
   use Pleroma.DataCase
 
   alias Pleroma.Activity
-  alias Pleroma.MigrationHelper
+  alias Pleroma.MigrationHelper.NotificationBackfill
   alias Pleroma.Notification
   alias Pleroma.Repo
   alias Pleroma.Web.CommonAPI
@@ -35,7 +35,7 @@ test "it fills in missing notification types" do
 
       assert {5, nil} = Repo.update_all(Notification, set: [type: nil])
 
-      MigrationHelper.fill_in_notification_types()
+      NotificationBackfill.fill_in_notification_types()
 
       assert %{type: "mention"} =
                Repo.get_by(Notification, user_id: other_user.id, activity_id: post.id)