diff --git a/lib/NoPermissionResponse.php b/lib/NoPermissionResponse.php
index b334923..60fbc61 100644
--- a/lib/NoPermissionResponse.php
+++ b/lib/NoPermissionResponse.php
@@ -2,22 +2,22 @@
 
 namespace OCA\BigBlueButton;
 
+use OCP\AppFramework\Http;
 use OCP\AppFramework\Http\ContentSecurityPolicy;
 use OCP\AppFramework\Http\Response;
 use OCP\Template;
 
 /**
- * @template-extends Response<int, array<string, mixed>>
+ * @template-extends Response<Http::STATUS_*, array<string, mixed>>
  *
  * (NC < 28)
  * @psalm-suppress TooManyTemplateParams
  */
 class NoPermissionResponse extends Response {
 	public function __construct() {
-		parent::__construct();
+		parent::__construct(Http::STATUS_FORBIDDEN);
 
 		$this->setContentSecurityPolicy(new ContentSecurityPolicy());
-		$this->setStatus(403);
 	}
 
 	public function render() {
diff --git a/lib/NotFoundResponse.php b/lib/NotFoundResponse.php
index 9630175..72cdc1b 100644
--- a/lib/NotFoundResponse.php
+++ b/lib/NotFoundResponse.php
@@ -2,22 +2,22 @@
 
 namespace OCA\BigBlueButton;
 
+use OCP\AppFramework\Http;
 use OCP\AppFramework\Http\ContentSecurityPolicy;
 use OCP\AppFramework\Http\Response;
 use OCP\Template;
 
 /**
- * @template-extends Response<int, array<string, mixed>>
+ * @template-extends Response<Http::STATUS_*, array<string, mixed>>
  *
  * (NC < 28)
  * @psalm-suppress TooManyTemplateParams
  */
 class NotFoundResponse extends Response {
 	public function __construct() {
-		parent::__construct();
+		parent::__construct(Http::STATUS_NOT_FOUND);
 
 		$this->setContentSecurityPolicy(new ContentSecurityPolicy());
-		$this->setStatus(404);
 	}
 
 	public function render() {
diff --git a/psalm.xml b/psalm.xml
index be99b57..341e7b9 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -11,6 +11,7 @@
 >
     <projectFiles>
         <directory name="lib" />
+        <directory name="vendor/nextcloud/ocp" />
         <ignoreFiles>
             <directory name="vendor" />
         </ignoreFiles>
@@ -36,4 +37,4 @@
             </errorLevel>
         </UndefinedDocblockClass>
     </issueHandlers>
-</psalm>
\ No newline at end of file
+</psalm>