diff --git a/core/modules/system/system.install b/core/modules/system/system.install
index 8addfd1..e2e59f6 100644
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -781,7 +781,7 @@ function system_requirements($phase) {
     ];
     if (!function_exists('twig_template_get_attributes')) {
       $requirements['twig_c_extension']['value'] = t('Not available');
-      $requirements['twig_c_extension']['description'] = t('Enabling the Twig C extension can greatly increase rendering performance. See <a href=":url">the installation instructions</a> for more detail.', [':url' => $url]);
+      $requirements['twig_c_extension']['description'] = t('Enabling the Twig C extension can increase rendering performance. See <a href="@url">the installation instructions</a> for more detail.', ['@url' => $url]);
     }
     else {
       $requirements['twig_c_extension']['description'] = t('The <a href=":url">Twig C extension</a> is available', [':url' => $url]);