diff --git a/core/includes/theme.inc b/core/includes/theme.inc
index b510e54..94d5e5d 100644
--- a/core/includes/theme.inc
+++ b/core/includes/theme.inc
@@ -1507,11 +1507,8 @@ function template_preprocess_field(&$variables, $hook) {
   $variables['label'] = SafeMarkup::checkPlain($element['#title']);
 
   $variables['multiple'] = FALSE;
-  if (isset($element['#items']) && method_exists($element['#items'], 'getFieldDefinition')) {
-    $fieldDefinition = $element['#items']->getFieldDefinition();
-    if (method_exists($fieldDefinition, 'getFieldStorageDefinition')) {
-      $variables['multiple'] = $fieldDefinition->getFieldStorageDefinition()->isMultiple();
-    }
+  if ($itemsDefinition = $element['#items']->getFieldDefinition()) {
+    $variables['multiple'] = $itemsDefinition->getFieldStorageDefinition()->isMultiple();
   }
 
   static $default_attributes;