diff --git a/README.md b/README.md
index a7eeab282..ae691811d 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ In addition to jekyll's default configuration options, you can provide:
 - `header_pages` to specify which pages should be displayed in navbar
 - `footer` string, which will be inserted on the end of the page (doesn't support markup, but html)
 - `google_analytics` tracking id (tracking will be enabled only in production environments)
-- `listen_for_clients_preferred_style` boolean, used to allow users to choose theme based on their preferences
+- `listen_for_clients_preferred_style` boolean, used to allow users to choose theme based on their preferences (mostly affected by OS dark or light theme, details see https://developer.mozilla.org/en-US/docs/Web/CSS/@media/prefers-color-scheme)
 
 ```yaml
 header_pages: