diff --git a/Resources/doc/features/invalidation.rst b/Resources/doc/features/invalidation.rst
index 6f3f9eaa..cb7c1953 100644
--- a/Resources/doc/features/invalidation.rst
+++ b/Resources/doc/features/invalidation.rst
@@ -6,7 +6,9 @@ Invalidation
 * :ref:`Varnish <foshttpcache:varnish configuration>`
 * :ref:`Nginx <foshttpcache:nginx configuration>` (except regular expressions)
 * :doc:`symfony-http-cache` (except regular expressions)
-* Fastly (except regular expressions)
+* :ref:`Fastly <foshttpcache:fastly configuration>` (except regular expressions)
+* :ref:`configuration_cloudflare`
+* :ref:`configuration_cloudfront`
 
 **Preparation**:
 
diff --git a/Resources/doc/reference/configuration/proxy-client.rst b/Resources/doc/reference/configuration/proxy-client.rst
index 40a3562b..76e0e405 100644
--- a/Resources/doc/reference/configuration/proxy-client.rst
+++ b/Resources/doc/reference/configuration/proxy-client.rst
@@ -237,6 +237,8 @@ HTTP method for sending purge requests to the Symfony HttpCache. Make sure to
 configure the purge plugin for your HttpCache with the matching header if you
 change this.
 
+.. _configuration_cloudflare:
+
 cloudflare
 ----------
 
@@ -274,6 +276,8 @@ Identifier for the Cloudflare zone you want to purge the cache for.
 List of Cloudflare API endpoints to use for purging the cache. You can use this to specify a different
 endpoint for testing purposes.
 
+.. _configuration_cloudfront:
+
 cloudfront
 ----------
 Talking to AWS cloudfront requires the ``jean-beru/fos-http-cache-cloudfront`` library. You need to require this dependency before you can configure the ``cloudfront`` proxy client.
@@ -322,7 +326,7 @@ Service identifier of a `AsyncAws\CloudFront\CloudFrontClient` client. More info
 `AWS Async documentation_`. It can not be used with the ``configuration`` option.
 
 Fastly
-----------
+------
 .. code-block:: yaml
 
     # config/packages/fos_http_cache.yaml
diff --git a/src/EventListener/FlashMessageListener.php b/src/EventListener/FlashMessageListener.php
index 787dab0f..11470293 100644
--- a/src/EventListener/FlashMessageListener.php
+++ b/src/EventListener/FlashMessageListener.php
@@ -57,7 +57,7 @@ public function onKernelResponse(ResponseEvent $event): void
         } catch (SessionNotFoundException) {
             return;
         }
-        if (!($session instanceof FlashBagAwareSessionInterface)) {
+        if (!$session instanceof FlashBagAwareSessionInterface) {
             return;
         }