diff --git a/web/skins/classic/views/js/montagereview.js.php b/web/skins/classic/views/js/montagereview.js.php
index 291bb99e8..5d43364e7 100644
--- a/web/skins/classic/views/js/montagereview.js.php
+++ b/web/skins/classic/views/js/montagereview.js.php
@@ -1,6 +1,12 @@
 
 var server_utc_offset = <?php
-$TimeZone = new DateTimeZone( ini_get('date.timezone') );
+$tz = ini_get('date.timezone');
+if (!$tz) {
+  $tz = 'UTC';
+  Warning('Timezone has not been set. Either select it in Options->System->Timezone or in php.ini');
+}
+
+$TimeZone = new DateTimeZone($tz);
 $now = new DateTime('now', $TimeZone);
 $offset = $TimeZone->getOffset($now);
 echo $offset.'; // '.floor($offset / 3600).' hours ';