diff --git a/core/includes/install.core.inc b/core/includes/install.core.inc
index db35fd7..bd580d6 100644
--- a/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -156,7 +156,7 @@ function install_drupal($class_loader, $settings = array()) {
     }
     elseif ($state['installation_finished']) {
       // Redirect to the newly installed site.
-      install_goto('');
+      install_goto_installed_site();
     }
   }
 }
diff --git a/core/includes/install.inc b/core/includes/install.inc
index 77e0b70..e9c4159 100644
--- a/core/includes/install.inc
+++ b/core/includes/install.inc
@@ -12,6 +12,7 @@
 use Drupal\Component\Utility\UrlHelper;
 use Drupal\Core\Extension\ExtensionDiscovery;
 use Drupal\Core\Site\Settings;
+use Drupal\Core\Url;
 
 /**
  * Requirement severity -- Informational message only.
@@ -844,6 +845,20 @@ function install_goto($path) {
 }
 
 /**
+ * Sends the user to the newly installed site's front page.
+ *
+ * This issues an on-site HTTP redirect. Messages (and errors) are erased.
+ */
+function install_goto_installed_site() {
+  $headers = array(
+    // Not a permanent redirect.
+    'Cache-Control' => 'no-cache',
+  );
+  $response = new RedirectResponse(Url::fromRoute('<front>')->toString(), 302, $headers);
+  $response->send();
+}
+
+/**
  * Returns the URL of the current script, with modified query parameters.
  *
  * This function can be called by low-level scripts (such as install.php and