diff --git a/core/includes/install.core.inc b/core/includes/install.core.inc
index 214ce28..b683347 100644
--- a/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -2010,6 +2010,28 @@ function install_check_requirements($install_state) {
         );
       }
     }
+
+    // Check that the services.yml file is read and writable.
+    $yml_file = $conf_path . '/services.yml';
+    $readable = drupal_verify_install_file($yml_file, FILE_READABLE);
+    $writable = drupal_verify_install_file($yml_file, FILE_WRITABLE);
+
+    if (!$readable) {
+      $requirements['services file readable'] = array(
+        'title' => t('Services file'),
+        'value' => t('The services.yml file is not readable.'),
+        'severity' => REQUIREMENT_ERROR,
+        'description' => t('@drupal requires read permissions to %file at all times. If you are unsure how to grant file permissions, consult the <a href="@handbook_url">online handbook</a>.', array('@drupal' => drupal_install_profile_distribution_name(), '%file' => $yml_file, '@handbook_url' => 'http://drupal.org/server-permissions')),
+      );
+    }
+    if (!$writable) {
+      $requirements['service file writable'] = array(
+        'title' => t('Services file'),
+        'value' => t('The service.yml file is not writable.'),
+        'severity' => REQUIREMENT_ERROR,
+        'description' => t('The @drupal installer requires write permissions to %file during the installation process. If you are unsure how to grant file permissions, consult the <a href="@handbook_url">online handbook</a>.', array('@drupal' => drupal_install_profile_distribution_name(), '%file' => $yml_file, '@handbook_url' => 'http://drupal.org/server-permissions')),
+      );
+    }
   }
   return $requirements;
 }