.../Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php
index 09ea886..a09518a 100644
--- a/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php
@@ -141,7 +141,7 @@ protected function wrapControllerExecutionInRenderContext($controller, array $ar
       // attachments or cacheability, then throw an exception: early rendering
       // is not permitted in that case. It is the developer's responsibility
       // to not use early rendering.
-      elseif (is_object($response) && ($response instanceof AttachmentsInterface || $response instanceof CacheableResponseInterface || $response instanceof CacheableDependencyInterface)) {
+      elseif ($response instanceof AttachmentsInterface || $response instanceof CacheableResponseInterface || $response instanceof CacheableDependencyInterface) {
         throw new \LogicException(sprintf('Early rendering is not permitted for controllers returning anything else than render arrays. Returned object class: %s.', get_class($response)));
       }
       else {