core/lib/Drupal/Core/EventSubscriber/FinishResponseSubscriber.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/core/lib/Drupal/Core/EventSubscriber/FinishResponseSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/FinishResponseSubscriber.php
index 863cf29..2309964 100644
--- a/core/lib/Drupal/Core/EventSubscriber/FinishResponseSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/FinishResponseSubscriber.php
@@ -167,7 +167,7 @@ public function onRespond(FilterResponseEvent $event) {
   protected function updateDrupalCacheHeaders(Response $response, CacheableInterface $cacheable_access_result) {
     // X-Drupal-Cache-Tags
     $cache_tags = $cacheable_access_result->getCacheTags();
-    if (strlen($response->headers->get('X-Drupal-Cache-Tags')) > 0) {
+    if ($response->headers->get('X-Drupal-Cache-Tags')) {
       $existing_cache_tags = explode(' ', $response->headers->get('X-Drupal-Cache-Tags'));
       $cache_tags = Cache::mergeTags($existing_cache_tags, $cache_tags);
     }
@@ -175,7 +175,7 @@ protected function updateDrupalCacheHeaders(Response $response, CacheableInterfa
 
     // X-Drupal-Cache-Contexts
     $cache_contexts = $cacheable_access_result->getCacheContexts();
-    if (strlen($response->headers->get('X-Drupal-Cache-Contexts')) > 0) {
+    if ($response->headers->get('X-Drupal-Cache-Contexts')) {
       $existing_cache_contexts = explode(' ', $response->headers->get('X-Drupal-Cache-Contexts'));
       $cache_contexts = Cache::mergeContexts($existing_cache_contexts, $cache_contexts);
     }