diff --git a/includes/install.inc b/includes/install.inc
index 6411f8f..9e81a54 100644
--- a/includes/install.inc
+++ b/includes/install.inc
@@ -1264,6 +1264,7 @@ function install_profile_info($profile, $locale = 'en') {
       'version' => NULL,
       'hidden' => FALSE,
       'php' => DRUPAL_MINIMUM_PHP,
+      'php_memory_limit' => DRUPAL_MINIMUM_PHP_MEMORY_LIMIT,
     );
     $info = drupal_parse_info_file("profiles/$profile/$profile.info") + $defaults;
     $info['dependencies'] = array_unique(array_merge(
diff --git a/modules/system/system.install b/modules/system/system.install
index 220dfee..c3367b6 100644
--- a/modules/system/system.install
+++ b/modules/system/system.install
@@ -45,6 +45,15 @@ function system_requirements($phase) {
       );
     }
   }
+  if (isset($GLOBALS['install_state']['profile_info'])) {
+    $profile_info = $GLOBALS['install_state']['profile_info'];
+  }
+  else {
+    if (!isset($profile)) {
+      $profile = drupal_get_profile();
+    }
+    $profile_info = install_profile_info($profile);
+  }
 
   // Web server information.
   $software = $_SERVER['SERVER_SOFTWARE'];
@@ -70,8 +79,8 @@ function system_requirements($phase) {
     );
   }
 
-  if (version_compare($phpversion, DRUPAL_MINIMUM_PHP) < 0) {
-    $requirements['php']['description'] = $t('Your PHP installation is too old. Drupal requires at least PHP %version.', array('%version' => DRUPAL_MINIMUM_PHP));
+  if (version_compare($phpversion, $profile_info['php']) < 0) {
+    $requirements['php']['description'] = $t('Your PHP installation is too old. Drupal requires at least PHP %version.', array('%version' => $profile_info['php']));
     $requirements['php']['severity'] = REQUIREMENT_ERROR;
     // If PHP is old, it's not safe to continue with the requirements check.
     return $requirements;
@@ -208,16 +217,16 @@ function system_requirements($phase) {
     'value' => $memory_limit == -1 ? t('-1 (Unlimited)') : $memory_limit,
   );
 
-  if ($memory_limit && $memory_limit != -1 && parse_size($memory_limit) < parse_size(DRUPAL_MINIMUM_PHP_MEMORY_LIMIT)) {
+  if ($memory_limit && $memory_limit != -1 && parse_size($memory_limit) < parse_size($profile_info['php_memory_limit'])) {
     $description = '';
     if ($phase == 'install') {
-      $description = $t('Consider increasing your PHP memory limit to %memory_minimum_limit to help prevent errors in the installation process.', array('%memory_minimum_limit' => DRUPAL_MINIMUM_PHP_MEMORY_LIMIT));
+      $description = $t('Consider increasing your PHP memory limit to %memory_minimum_limit to help prevent errors in the installation process.', array('%memory_minimum_limit' => $profile_info['php_memory_limit']));
     }
     elseif ($phase == 'update') {
-      $description = $t('Consider increasing your PHP memory limit to %memory_minimum_limit to help prevent errors in the update process.', array('%memory_minimum_limit' => DRUPAL_MINIMUM_PHP_MEMORY_LIMIT));
+      $description = $t('Consider increasing your PHP memory limit to %memory_minimum_limit to help prevent errors in the update process.', array('%memory_minimum_limit' => $profile_info['php_memory_limit']));
     }
     elseif ($phase == 'runtime') {
-      $description = $t('Depending on your configuration, Drupal can run with a %memory_limit PHP memory limit. However, a %memory_minimum_limit PHP memory limit or above is recommended, especially if your site uses additional custom or contributed modules.', array('%memory_limit' => $memory_limit, '%memory_minimum_limit' => DRUPAL_MINIMUM_PHP_MEMORY_LIMIT));
+      $description = $t('Depending on your configuration, Drupal can run with a %memory_limit PHP memory limit. However, a %memory_minimum_limit PHP memory limit or above is recommended, especially if your site uses additional custom or contributed modules.', array('%memory_limit' => $memory_limit, '%memory_minimum_limit' => $profile_info['php_memory_limit']));
     }
 
     if (!empty($description)) {