diff --git a/src/etc/inc/system.inc b/src/etc/inc/system.inc
index a56f94e2b..afbf57a02 100644
--- a/src/etc/inc/system.inc
+++ b/src/etc/inc/system.inc
@@ -1397,7 +1397,7 @@ function system_timezone_configure()
 
     /* reset to default if empty or nonexistent */
     if (empty($timezone) || !in_array($timezone, $timezones) ||
-	!file_exists(sprintf('/usr/share/zoneinfo/%s', $timezone))) {
+        !file_exists(sprintf('/usr/share/zoneinfo/%s', $timezone))) {
         $timezone = 'Etc/UTC';
     }