diff --git a/test/pleroma/web/pleroma_api/controllers/chat_controller_test.exs b/test/pleroma/web/pleroma_api/controllers/chat_controller_test.exs
index aa40c6f440..7138a6636d 100644
--- a/test/pleroma/web/pleroma_api/controllers/chat_controller_test.exs
+++ b/test/pleroma/web/pleroma_api/controllers/chat_controller_test.exs
@@ -7,10 +7,12 @@ defmodule Pleroma.Web.PleromaAPI.ChatControllerTest do
   alias Pleroma.Chat
   alias Pleroma.Chat.MessageReference
   alias Pleroma.Object
+  alias Pleroma.UnstubbedConfigMock, as: ConfigMock
   alias Pleroma.User
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.CommonAPI
 
+  import Mox
   import Pleroma.Factory
 
   describe "POST /api/v1/pleroma/chats/:id/messages/:message_id/read" do
@@ -112,6 +114,9 @@ test "it works with an attachment", %{conn: conn, user: user} do
         filename: "an_image.jpg"
       }
 
+      ConfigMock
+      |> stub_with(Pleroma.Test.StaticConfig)
+
       {:ok, upload} = ActivityPub.upload(file, actor: user.ap_id)
 
       other_user = insert(:user)