diff --git a/core/modules/image/src/Plugin/Field/FieldType/ImageItem.php b/core/modules/image/src/Plugin/Field/FieldType/ImageItem.php
index dd1510f..b329f04 100644
--- a/core/modules/image/src/Plugin/Field/FieldType/ImageItem.php
+++ b/core/modules/image/src/Plugin/Field/FieldType/ImageItem.php
@@ -3,13 +3,13 @@
 namespace Drupal\image\Plugin\Field\FieldType;
 
 use Drupal\Component\Utility\Random;
+use Drupal\Core\Entity\EntityInterface;
 use Drupal\Core\Field\FieldDefinitionInterface;
 use Drupal\Core\Field\FieldStorageDefinitionInterface;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\StreamWrapper\StreamWrapperInterface;
 use Drupal\Core\TypedData\DataDefinition;
 use Drupal\file\Entity\File;
-use Drupal\file\FileInterface;
 use Drupal\file\Plugin\Field\FieldType\FileItem;
 
 /**
@@ -314,7 +314,7 @@ public function preSave() {
     $height = $this->height;
 
     // Determine the dimensions if necessary.
-    if (!$this->isEmpty()) {
+    if ($this->entity && $this->entity instanceof EntityInterface) {
       if (empty($width) || empty($height)) {
         $image = \Drupal::service('image.factory')->get($this->entity->getFileUri());
         if ($image->isValid()) {