diff --git a/alexa_webhook/src/Controller/AlexaWebhookController.php b/alexa_webhook/src/Controller/AlexaWebhookController.php
index 4e29d15..c5bc7f2 100644
--- a/alexa_webhook/src/Controller/AlexaWebhookController.php
+++ b/alexa_webhook/src/Controller/AlexaWebhookController.php
@@ -29,13 +29,18 @@ use Symfony\Component\HttpFoundation\Request;
  */
 class AlexaWebhookController extends ControllerBase {
 
-  /** @var \Symfony\Component\EventDispatcher\EventDispatcherInterface */
+  /**
+   * The Symfony EventDispatcher.
+   *
+   * @var \Symfony\Component\EventDispatcher\EventDispatcherInterface
+   */
   protected $eventDispatcher;
 
   /**
    * AlexaWebhookController constructor.
    *
    * @param \Symfony\Component\EventDispatcher\EventDispatcherInterface $eventDispatcher
+   *    The eventDispatcher information.
    */
   public function __construct(EventDispatcherInterface $eventDispatcher) {
     $this->eventDispatcher = $eventDispatcher;
@@ -96,15 +101,22 @@ class AlexaWebhookController extends ControllerBase {
  */
 class AlexaCachedCertificate extends Certificate {
 
-  /** @var \Drupal\Core\Cache\CacheBackendInterface $cacheService */
+  /**
+   * The cache service.
+   *
+   * @var \Drupal\Core\Cache\CacheBackendInterface $cacheService
+   */
   protected $cacheService;
 
   /**
    * AlexaCachedCertificate constructor.
    *
-   * @param $certificateUrl
-   * @param $signature
-   * @param $cacheService
+   * @param string $certificateUrl
+   *    The Alexa cartificate url.
+   * @param string $signature
+   *    The Alexa signature.
+   * @param string $cacheService
+   *    The Alexa cache service.
    */
   public function __construct($certificateUrl, $signature, $cacheService) {
     parent::__construct($certificateUrl, $signature);