diff --git a/core/lib/Drupal/Core/Entity/ContentEntityForm.php b/core/lib/Drupal/Core/Entity/ContentEntityForm.php
index 9e5bdf0..3e853bb 100644
--- a/core/lib/Drupal/Core/Entity/ContentEntityForm.php
+++ b/core/lib/Drupal/Core/Entity/ContentEntityForm.php
@@ -282,7 +282,7 @@ public function updateFormLangcode($entity_type_id, EntityInterface $entity, arr
    *   The entity updated with the submitted values.
    */
   public function updateChangedTime(EntityInterface $entity) {
-    if ($entity->getEntityType()->entityClassImplements(EntityChangedInterface::class)) {
+    if ($entity instanceof EntityChangedInterface) {
       $entity->setChangedTime(REQUEST_TIME);
     }
   }
diff --git a/core/modules/content_translation/src/Tests/ContentTranslationUITestBase.php b/core/modules/content_translation/src/Tests/ContentTranslationUITestBase.php
index 5989051..21eda6b 100644
--- a/core/modules/content_translation/src/Tests/ContentTranslationUITestBase.php
+++ b/core/modules/content_translation/src/Tests/ContentTranslationUITestBase.php
@@ -600,7 +600,7 @@ public function doTestChangedTimeAfterSaveWithoutChanges() {
     $storage->resetCache([$this->entityId]);
     $entity = $storage->load($this->entityId);
     // Test only entities, which implement the EntityChangedInterface.
-    if ($entity->getEntityType()->entityClassImplements(EntityChangedInterface::class)) {
+    if ($entity instanceof EntityChangedInterface) {
       $changed_timestamp = $entity->getChangedTime();
 
       $entity->save();