diff --git a/core/install.php b/core/install.php
index 80e03179a4..dff4552bda 100644
--- a/core/install.php
+++ b/core/install.php
@@ -22,7 +22,7 @@
 define('MAINTENANCE_MODE', 'install');
 
 // Exit early if running an incompatible PHP version to avoid fatal errors.
-if (version_compare(PHP_VERSION, '7.3.0') < 0) {
+if (version_compare(PHP_VERSION, \Drupal::MINIMUM_PHP) < 0) {
   print 'Your PHP installation is too old. Drupal requires at least PHP 7.3.0. See the <a href="https://www.drupal.org/requirements">system requirements</a> page for more information.';
   exit;
 }