diff --git a/core/modules/system/src/Tests/System/SitesDirectoryHardeningTest.php b/core/modules/system/src/Tests/System/SitesDirectoryHardeningTest.php
index 40d25d5..8c9a5f2 100644
--- a/core/modules/system/src/Tests/System/SitesDirectoryHardeningTest.php
+++ b/core/modules/system/src/Tests/System/SitesDirectoryHardeningTest.php
@@ -12,6 +12,8 @@
 
 /**
  * Test unicode handling features implemented in unicode.inc.
+ *
+ * @group system
  */
 class SitesDirectoryHardeningTest extends WebTestBase {
 
diff --git a/core/modules/system/system.install b/core/modules/system/system.install
index 7cde3dd..df8968b 100644
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -372,7 +372,7 @@ function system_requirements($phase) {
       $message = t('Protection disabled');
       $severity = REQUIREMENT_WARNING;
     }
-    elseif (!drupal_verify_install_file($conf_path, FILE_NOT_WRITABLE, 'dir')) {
+    elseif (!drupal_verify_install_file($site_path, FILE_NOT_WRITABLE, 'dir')) {
       $message = t('Not protected');
       $severity = REQUIREMENT_ERROR;
       $conf_errors[] = t("The directory %file is not protected from modifications and poses a security risk. You must change the directory's permissions to be non-writable.", array('%file' => $site_path));