diff --git a/core/modules/translation_entity/lib/Drupal/translation_entity/FieldTranslationSynchronizer.php b/core/modules/translation_entity/lib/Drupal/translation_entity/FieldTranslationSynchronizer.php
index 6d84d99..9ab78d7 100644
--- a/core/modules/translation_entity/lib/Drupal/translation_entity/FieldTranslationSynchronizer.php
+++ b/core/modules/translation_entity/lib/Drupal/translation_entity/FieldTranslationSynchronizer.php
@@ -67,7 +67,7 @@ public function synchronizeFields(EntityInterface $entity, $sync_langcode, $orig
 
       // Sync when the field is not empty, when the synchronization translations
       // setting is set, and the field is translatable.
-      if (!$entity->{$field_name}->isEmpty() && !empty($instance['settings']['translation_sync']) && field_is_translatable($entity_type, $field)) {
+      if (!$entity->get($field_name)->isEmpty() && !empty($instance['settings']['translation_sync']) && field_is_translatable($entity_type, $field)) {
         // Retrieve all the untranslatable column groups and merge them into
         // single list.
         $groups = array_keys(array_diff($instance['settings']['translation_sync'], array_filter($instance['settings']['translation_sync'])));
@@ -88,7 +88,7 @@ public function synchronizeFields(EntityInterface $entity, $sync_langcode, $orig
             // used as the unchanged items. In fact there are no unchanged items
             // to check against.
             $langcode = $original_langcode ?: $sync_langcode;
-            $unchanged_items = $entity_unchanged->getTranslation($langcode)->{$field_name}->getValue();
+            $unchanged_items = $entity_unchanged->getTranslation($langcode)->get($field_name)->getValue();
             $this->synchronizeItems($values, $unchanged_items, $sync_langcode, array_keys($translations), $columns);
 
             foreach ($translations as $langcode => $language) {