diff --git a/content/waf/reference/response-blocked-requests.md b/content/waf/reference/response-blocked-requests.md
index 134a73a6cef928bb5a9bc250b7f15426c1d4857b..d7ea11773a3a9d23d04a5f35d6d53731be68c6f9 100644
--- a/content/waf/reference/response-blocked-requests.md
+++ b/content/waf/reference/response-blocked-requests.md
@@ -16,9 +16,13 @@ Preferred content type          | Format of _Block_ action response
 `text/plain`                    | Plain text
 Other / Not defined             | HTML
 
+The WAF will consider any quality factor values (`;q=<VALUE>`) specified in the `Accept` header when determining the preferred content type. For more information on quality factor values, refer to the [MDN documentation](https://developer.mozilla.org/en-US/docs/Glossary/Quality_values).
+
 ## Custom response
 
-You can define a custom response for blocked requests. A custom response has the following settings:
+You can define a custom response for blocked requests. When you configure a custom response, the value of the `Accept` header will be ignored.
+
+A custom response has the following settings:
 
 * **Response type**: Choose a content type or the default block response from the list. The available custom response types are the following:
 
@@ -29,5 +33,5 @@ You can define a custom response for blocked requests. A custom response has the
     | Custom JSON     | `"application/json"` |
     | Custom XML      | `"text/xml"`         |
 
-* **Response code**: Choose an HTTP status code for the response, in the range 400-499. The default response code is 403.
+* **Response code**: Choose an HTTP status code for the response, in the range 400-499. The default response code is `403` for [custom rules](/waf/custom-rules/) and `429` for [rate limiting rules](/waf/rate-limiting-rules/).
 * **Response body**: The body of the custom response. Configure a valid body according to the response type you selected.