diff --git a/core/lib/Drupal/Core/CoreBundle.php b/core/lib/Drupal/Core/CoreBundle.php
index 1afb295..6be3fb6 100644
--- a/core/lib/Drupal/Core/CoreBundle.php
+++ b/core/lib/Drupal/Core/CoreBundle.php
@@ -346,7 +346,7 @@ protected function registerTwig(ContainerBuilder $container) {
         // This is saved / loaded via drupal_php_storage().
         // All files can be refreshed by clearing caches.
         // @todo ensure garbage collection of expired files.
-        'cache' => settings()->get('twig_debug', FALSE),
+        'cache' => settings()->get('twig_cache', TRUE),
         'base_template_class' => 'Drupal\Core\Template\TwigTemplate',
         // @todo Remove in followup issue
         // @see http://drupal.org/node/1712444.
diff --git a/sites/default/default.settings.php b/sites/default/default.settings.php
old mode 100644
new mode 100755
index 24ba7d7..909a2c8
--- a/sites/default/default.settings.php
+++ b/sites/default/default.settings.php
@@ -290,7 +290,7 @@
  *
  * Not recommended in production environments.
  */
-$settings['twig_debug'] = FALSE;
+# $settings['twig_debug'] = TRUE;
 
 /**
  * Twig auto-reload:
@@ -299,7 +299,17 @@
  *
  * Not recommended in production environments.
  */
-$settings['twig_auto_reload'] = FALSE;
+# $settings['twig_auto_reload'] = TRUE;
+
+/**
+ * Twig cache:
+ *
+ * Disabling the Twig cache will store the compiled Twig templates in RAM
+ * instead of the file system.
+ *
+ * Not recommended in production environments.
+ */
+# $settings['twig_cache'] = FALSE;
 
 /**
  * External access proxy settings: