diff -u b/core/modules/system/system.install b/core/modules/system/system.install
--- b/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -648,14 +648,13 @@
     }
   }
 
-  // Check if xdebug.max_nesting_level is below 256, as it crashes some pages.
+  // Check if xdebug.max_nesting_level is too low, as it crashes some pages.
   $xdebug_nesting_level = 256;
   if (extension_loaded('xdebug') && ini_get('xdebug.max_nesting_level') < $xdebug_nesting_level) {
-
-    // Report on where correct ini file is to user.
+    // Report on where the correct ini file is to the user.
     $ini_scanned_files = php_ini_scanned_files();
     $ini_location = php_ini_loaded_file();
-    if ($ini_scanned_files !== false) {
+    if ($ini_scanned_files !== FALSE) {
       $ini_files = explode(',', $ini_scanned_files);
       foreach ($ini_files as $value) {
         if (strpos($value, 'xdebug.ini') !== FALSE) {
@@ -667,7 +666,7 @@
 
     $description = t('A max_nesting_level lower than @lvl will cause some pages in your Drupal site to crash. To fix this it is recommended to set xdebug.max_nesting_level=@lvl in your PHP configuration for Xdebug.', array('@lvl' => $xdebug_nesting_level));
     if ($ini_location !== FALSE) {
-      $description .= ' ' . t('Your Xdebug configuration is located in @iniLocation.', array('@iniLocation' => $ini_location));
+      $description .= ' ' . t('Your Xdebug configuration can be modified in @iniLocation.', array('@iniLocation' => $ini_location));
     }
 
     $requirements['xdebug_max_nesting_level'] = array(