diff --git a/config/initializers/access_token_authentication.rb b/config/initializers/access_token_authentication.rb
index f650b1b5e2..dfdcee839b 100644
--- a/config/initializers/access_token_authentication.rb
+++ b/config/initializers/access_token_authentication.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-Rails.application.config.after_initialize do
+Rails.application.config.to_prepare do
   ActiveSupport.on_load(:active_record) do
     if defined?(ActiveRecord::ConnectionAdapters::Mysql2Adapter)
       ActiveRecord::ConnectionAdapters::Mysql2Adapter.class_eval do
diff --git a/config/initializers/money.rb b/config/initializers/money.rb
index bd750ff6b9..b73196d453 100644
--- a/config/initializers/money.rb
+++ b/config/initializers/money.rb
@@ -1,6 +1,6 @@
 require 'three_scale/money_conversions'
 
-Rails.application.config.after_initialize do
+Rails.application.config.to_prepare do
   ActionController::Base.helper(ThreeScale::MoneyHelper)
 
   ActiveSupport.on_load(:active_record) do