diff --git a/apps/provisioning_api/lib/AppInfo/Application.php b/apps/provisioning_api/lib/AppInfo/Application.php
index 57de9dad4162f..9595dd4a60671 100644
--- a/apps/provisioning_api/lib/AppInfo/Application.php
+++ b/apps/provisioning_api/lib/AppInfo/Application.php
@@ -53,7 +53,7 @@ public function register(IRegistrationContext $context): void {
 			);
 		});
 		$context->registerService(ProvisioningApiMiddleware::class, function (ContainerInterface $c) {
-			$user = $c->get(IUserManager::class)->get($c->get('UserId'));
+			$user = $c->get(IUserManager::class)->get($c->get('userId'));
 			$isAdmin = false;
 			$isSubAdmin = false;