diff --git a/lib/open_project/documents/patches/custom_fields_helper_patch.rb b/lib/open_project/documents/patches/custom_fields_helper_patch.rb
index 11122cb279..7f2ffc7446 100644
--- a/lib/open_project/documents/patches/custom_fields_helper_patch.rb
+++ b/lib/open_project/documents/patches/custom_fields_helper_patch.rb
@@ -39,7 +39,7 @@ module OpenProject::Documents::Patches
           custom_fields_tabs_without_documents << {
             name: 'DocumentCategoryCustomField',
             partial: 'custom_fields/tab',
-            label: DocumentCategory::OptionName
+            label: DocumentCategory::OPTION_NAME
           }
         end