diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index ea2a742..84123d6 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -21,15 +21,12 @@
 
 /**
  * Minimum supported version of PHP.
- */
-const DRUPAL_MINIMUM_PHP = '5.4.5';
-
-/**
- * Minimum supported version of PHP on Debian.
+ *
+ * Minimum version is 5.4.5, or 5.4.4-14+deb7u14 on Debian Wheezy.
  *
  * @see https://www.drupal.org/node/2267551.
  */
-const DRUPAL_MINIMUM_PHP_DEBIAN = '5.4.4-14+deb7u14';
+define('DRUPAL_MINIMUM_PHP', PHP_VERSION == '5.4.4-14+deb7u14' ? '5.4.4' : '5.4.5');
 
 /**
  * Minimum recommended value of PHP memory_limit.
diff --git a/core/modules/system/system.install b/core/modules/system/system.install
index c1751c4..868b2eb 100644
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -72,7 +72,7 @@ function system_requirements($phase) {
     );
   }
 
-  if (version_compare($phpversion, DRUPAL_MINIMUM_PHP_DEBIAN) < 0 && version_compare($phpversion, DRUPAL_MINIMUM_PHP) < 0) {
+  if (version_compare($phpversion, DRUPAL_MINIMUM_PHP) < 0) {
     $requirements['php']['description'] = t('Your PHP installation is too old. Drupal requires at least PHP %version.', array('%version' => DRUPAL_MINIMUM_PHP));
     $requirements['php']['severity'] = REQUIREMENT_ERROR;
     // If PHP is old, it's not safe to continue with the requirements check.