diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 4bfbbd167..80f51ae84 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -10,6 +10,10 @@ nav_order: 5
 
 ## main
 
+* Fix API documentation and revert unnecessary change in `preview.rb`.
+
+    *Richard Macklin*
+
 * Initialize ViewComponent::Config with defaults before framework load.
 
     *Simon Fish*
diff --git a/docs/api.md b/docs/api.md
index a4a820abe..883387948 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -14,11 +14,6 @@ nav_order: 3
 
 Returns the current config.
 
-### `.config=(value)`
-
-Replaces the entire config. You shouldn't need to use this directly
-unless you're building a `ViewComponent::Config` elsewhere.
-
 ### `.sidecar_files(extensions)`
 
 Find sidecar files for the given extensions.
@@ -160,6 +155,13 @@ Defaults to `nil`. If this is falsy, generators will use
 
 Returns the value of attribute config.
 
+### `#current`
+
+Returns the current ViewComponent::Config. This is persisted against this
+class so that config options remain accessible before the rest of
+ViewComponent has loaded. Defaults to an instance of ViewComponent::Config
+with all other documented defaults set.
+
 ### `.default_preview_layout`
 
 A custom default layout used for the previews index page and individual
diff --git a/lib/view_component/preview.rb b/lib/view_component/preview.rb
index 0510f1ec6..717acbd5b 100644
--- a/lib/view_component/preview.rb
+++ b/lib/view_component/preview.rb
@@ -4,7 +4,7 @@
 
 module ViewComponent # :nodoc:
   class Preview
-    include Rails.application.routes.url_helpers if defined?(Rails) && Rails.application.present?
+    include Rails.application.routes.url_helpers if defined?(Rails.application.routes.url_helpers)
     include ActionView::Helpers::TagHelper
     include ActionView::Helpers::AssetTagHelper
     extend ActiveSupport::DescendantsTracker