diff --git a/packages/integrations/mdx/README.md b/packages/integrations/mdx/README.md
index 87514489bdbf..9b05cb76b033 100644
--- a/packages/integrations/mdx/README.md
+++ b/packages/integrations/mdx/README.md
@@ -534,6 +534,9 @@ export default {
     },
   })],
 };
+```
+
+This inherits the configuration of `markdown.remarkRehype`. This behavior can be changed by configuring `extendPlugins`.
 
 ## Examples