diff --git a/core/lib/Drupal/Core/Field/EntityReferenceFieldItemList.php b/core/lib/Drupal/Core/Field/EntityReferenceFieldItemList.php
index de57c9b..bb065e2 100644
--- a/core/lib/Drupal/Core/Field/EntityReferenceFieldItemList.php
+++ b/core/lib/Drupal/Core/Field/EntityReferenceFieldItemList.php
@@ -16,7 +16,7 @@ class EntityReferenceFieldItemList extends FieldItemList implements EntityRefere
    * {@inheritdoc}
    */
   public function referencedEntities() {
-    if (!isset($this->list)) {
+    if (empty($this->list)) {
       return array();
     }
 
diff --git a/core/modules/file/config/schema/file.schema.yml b/core/modules/file/config/schema/file.schema.yml
index e260667..0fb20de 100644
--- a/core/modules/file/config/schema/file.schema.yml
+++ b/core/modules/file/config/schema/file.schema.yml
@@ -35,9 +35,6 @@ field.file.settings:
     uri_scheme:
       type: string
       label: 'Upload destination'
-    target_type:
-      type: string
-      label: 'Type of item to reference'
 
 field.file.value:
   type: sequence
diff --git a/core/modules/image/config/schema/image.schema.yml b/core/modules/image/config/schema/image.schema.yml
index ccaf857..5b642b3 100644
--- a/core/modules/image/config/schema/image.schema.yml
+++ b/core/modules/image/config/schema/image.schema.yml
@@ -90,9 +90,6 @@ field.image.settings:
     default_image:
       type: field_default_image
       label: 'Default value'
-    target_type:
-      type: string
-      label: 'Type of item to reference'
 
 field.image.instance_settings:
   type: mapping