diff --git a/core/modules/system/system.install b/core/modules/system/system.install
index 960bb7d..b56fb8d 100644
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -192,18 +192,10 @@ function system_requirements($phase) {
     // If PHP is old, it's not safe to continue with the requirements check.
     return $requirements;
   }
-  if ((version_compare($phpversion, DRUPAL_RECOMMENDED_PHP) < 0) && ($phase === 'install' || $phase === 'runtime')) {
-    // Warn if still on PHP 5. If at least PHP 7.0, relax from "warning" to
-    // "info", and show it at runtime only, to not scare users while installing.
-    if (version_compare($phpversion, '7.0') < 0) {
-      $requirements['php']['description'] = t('Drupal will drop support for this version on March 6, 2019. Upgrade to PHP version %recommended or higher to ensure your site can receive updates and remain secure. See <a href="http://php.net/supported-versions.php">PHP\'s version support documentation</a> and the <a href=":php_requirements">Drupal 8 PHP requirements handbook page</a> for more information.', ['%recommended' => DRUPAL_RECOMMENDED_PHP, ':php_requirements' => 'https://www.drupal.org/docs/8/system-requirements/php']);
-      $requirements['php']['severity'] = REQUIREMENT_WARNING;
-    }
-    else {
-      if ($phase === 'runtime') {
-        $requirements['php']['description'] = t('It is recommended to upgrade to PHP version %recommended or higher for the best ongoing support.  See <a href="http://php.net/supported-versions.php">PHP\'s version support documentation</a> and the <a href=":php_requirements">Drupal 8 PHP requirements handbook page</a> for more information.', ['%recommended' => DRUPAL_RECOMMENDED_PHP, ':php_requirements' => 'https://www.drupal.org/docs/8/system-requirements/php']);
-        $requirements['php']['severity'] = REQUIREMENT_INFO;
-      }
+  if (version_compare($phpversion, DRUPAL_RECOMMENDED_PHP) < 0) {
+    if ($phase === 'runtime') {
+      $requirements['php']['description'] = t('It is recommended to upgrade to PHP version %recommended or higher for the best ongoing support.  See <a href="http://php.net/supported-versions.php">PHP\'s version support documentation</a> and the <a href=":php_requirements">Drupal 8 PHP requirements handbook page</a> for more information.', ['%recommended' => DRUPAL_RECOMMENDED_PHP, ':php_requirements' => 'https://www.drupal.org/docs/8/system-requirements/php']);
+      $requirements['php']['severity'] = REQUIREMENT_INFO;
     }
   }