diff --git a/config/test.exs b/config/test.exs
index 5724319a2..071e985dd 100644
--- a/config/test.exs
+++ b/config/test.exs
@@ -146,7 +146,7 @@ config :pleroma, :config_impl, Pleroma.UnstubbedConfigMock
 config :pleroma, Pleroma.PromEx, disabled: true
 
 # Mox definitions. Only read during compile time.
-Application.put_env(Pleroma.User.Backup, :config_impl, Pleroma.UnstubbedConfigMock)
+config :pleroma, Pleroma.User.Backup, config_impl: Pleroma.UnstubbedConfigMock
 
 if File.exists?("./config/test.secret.exs") do
   import_config "test.secret.exs"
diff --git a/lib/pleroma/user/backup.ex b/lib/pleroma/user/backup.ex
index c7359313a..04dc8e0ce 100644
--- a/lib/pleroma/user/backup.ex
+++ b/lib/pleroma/user/backup.ex
@@ -35,7 +35,7 @@ defmodule Pleroma.User.Backup do
     timestamps()
   end
 
-  @config_impl Application.compile_env(__MODULE__, :config_impl, Pleroma.Config)
+  @config_impl Application.compile_env(:pleroma, [__MODULE__, :config_impl], Pleroma.Config)
 
   def create(user, admin_id \\ nil) do
     with :ok <- validate_limit(user, admin_id),