diff --git a/src/JsonLd/Serializer/ItemNormalizer.php b/src/JsonLd/Serializer/ItemNormalizer.php
index 230ecc0f6b9..fb2cfd42a1e 100644
--- a/src/JsonLd/Serializer/ItemNormalizer.php
+++ b/src/JsonLd/Serializer/ItemNormalizer.php
@@ -129,7 +129,8 @@ public function normalize(mixed $data, ?string $format = null, array $context =
         // TODO: we should not remove the resource_class in the normalizeRawCollection as we would find out anyway that it's not the same as the requested one
         $previousResourceClass = $context['resource_class'] ?? null;
         $metadata = [];
-        if ($isResourceClass = $this->resourceClassResolver->isResourceClass($resourceClass) && (null === $previousResourceClass || $this->resourceClassResolver->isResourceClass($previousResourceClass))) {
+        $isResourceClass = $this->resourceClassResolver->isResourceClass($resourceClass);
+        if ($isResourceClass && (null === $previousResourceClass || $this->resourceClassResolver->isResourceClass($previousResourceClass))) {
             $resourceClass = $this->resourceClassResolver->getResourceClass($data, $previousResourceClass);
             $context = $this->initContext($resourceClass, $context);
             $metadata = $this->addJsonLdContext($this->contextBuilder, $resourceClass, $context);
@@ -149,7 +150,7 @@ public function normalize(mixed $data, ?string $format = null, array $context =
                 } catch (\Exception) {
                     $context['output']['operation'] = $itemOp;
                 }
-            } elseif ($this->resourceClassResolver->isResourceClass($resourceClass)) {
+            } elseif ($isResourceClass) {
                 $context['output']['operation'] = $this->resourceMetadataCollectionFactory->create($resourceClass)->getOperation();
             }