diff --git a/after_init.rb b/after_init.rb
index 3e3acb3..113d897 100644
--- a/after_init.rb
+++ b/after_init.rb
@@ -20,10 +20,8 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
-# All files in lib sub-folder are already loaded by Zeitwerk
-if RedmineApp::Application.config.autoloader != :zeitwerk
-  require_dependency File.dirname(__FILE__) + '/lib/redmine_custom_workflows.rb'
-end
+require 'redmine'
+require File.dirname(__FILE__) + '/lib/redmine_custom_workflows'
 
 def custom_workflows_init
   # Administration menu extension