diff --git a/core/modules/system/system.install b/core/modules/system/system.install
index f64f3dc..8b2d4ce 100644
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -796,11 +796,11 @@ function system_requirements($phase) {
       );
     }
   }
 
   // Check if the Twig C extension is available.
-  if ($phase == 'runtime' && (version_compare($phpversion, 7) < 0)) {
+  if ($phase == 'runtime' && (version_compare($phpversion, '7.0.0') < 0)) {
     $url = 'http://twig.sensiolabs.org/doc/installation.html#installing-the-c-extension';
     $requirements['twig_c_extension'] = [
       'title' => t('Twig C extension'),
       'severity' => REQUIREMENT_INFO,
     ];