diff --git a/src/Normalizer/JsonApiDocumentTopLevelNormalizer.php b/src/Normalizer/JsonApiDocumentTopLevelNormalizer.php
index 221ad0c..723acaf 100644
--- a/src/Normalizer/JsonApiDocumentTopLevelNormalizer.php
+++ b/src/Normalizer/JsonApiDocumentTopLevelNormalizer.php
@@ -195,7 +195,7 @@ class JsonApiDocumentTopLevelNormalizer extends NormalizerBase implements Denorm
    *   The normalizer value.
    */
   public function buildNormalizerValue($data, $format = NULL, array $context = []) {
-    $context += $this->expandContext($context['request'], $context['resource_type']);
+    $context += $this->expandContext($context['request'], $this->currentContext->getResourceType());
     if ($data instanceof EntityReferenceFieldItemListInterface) {
       $output = $this->serializer->normalize($data, $format, $context);
       // The only normalizer value that computes nested includes automatically is the JsonApiDocumentTopLevelNormalizerValue.