core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php b/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php
index 8d8a6df..73cb2fc 100644
--- a/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php
+++ b/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php
@@ -149,7 +149,7 @@ public function renderResponse(array $main_content, Request $request, RouteMatch
     // Merge the request's access result cacheability metadata, if it has any.
     $access_result = $request->attributes->get(AccessAwareRouterInterface::ACCESS_RESULT);
     if ($access_result instanceof CacheableInterface) {
-      $cache_contexts = Cache::mergeTags($cache_tags, $access_result->getCacheContexts());
+      $cache_contexts = Cache::mergeContexts($cache_contexts, $access_result->getCacheContexts());
       $cache_tags = Cache::mergeTags($cache_tags, $access_result->getCacheTags());
     }