diff --git a/Classes/Controller/JsonApiItemCommandController.php b/Classes/Controller/JsonApiItemCommandController.php
index d2ebf9a..32574f8 100644
--- a/Classes/Controller/JsonApiItemCommandController.php
+++ b/Classes/Controller/JsonApiItemCommandController.php
@@ -51,7 +51,7 @@ public function read(ServerRequestInterface $request): ResponseInterface
         $this->parseIncludes($queryParams);
         $this->parseFieldsets($queryParams);
 
-        $resourceIdentifier = \urldecode($request->getAttribute('variables')['id'] ?: '');
+        $resourceIdentifier = \urldecode($request->getAttribute('variables')['id'] ?? '');
 
         $context = $request->getAttributes()['context'] ?? null;
         $data = $this->fetchAndTransformData($resourceIdentifier, $context);
@@ -78,7 +78,7 @@ protected function fetchAndTransformData(string $resourceIdentifier, ?Context $c
 
     protected function fillInCommandArguments(ServerRequestInterface $request, string $commandName, array $commandArguments, array $commandInterfaces): array
     {
-        $resourceIdentifier = \urldecode($request->getAttribute('variables')['id'] ?: '');
+        $resourceIdentifier = \urldecode($request->getAttribute('variables')['id'] ?? '');
         $commandArguments['resourceIdentifier'] = $resourceIdentifier;
         $commandArguments['resourceType'] = $this->resourceType;