diff --git a/core/modules/system/system.install b/core/modules/system/system.install
index 4bc35c8..271a0c9 100644
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -26,11 +26,11 @@ function system_requirements($phase) {
   // Subdomain validation.
   if (strpos($_SERVER['HTTP_HOST'], '_') !== FALSE) {
     // Domain-name requirements are specified in RFCs 952 and 1123, and the
-    // underscore character is not permitted.  Whilst most browsers will still
+    // underscore character is not permitted. Whilst most browsers will still
     // show the web site, Internet Explorer will silently drop any cookies from
     // that domain, which means Internet Explorer users will not be able to log
     // in.
-   $requirements['hostname'] = array(
+    $requirements['hostname'] = array(
       'title' => t('Host name'),
       'value' => t('Fails'),
       'severity' => REQUIREMENT_WARNING,