diff --git a/Application/Base/Tool/Request.class.php b/Application/Base/Tool/Request.class.php
index f8a9baad2..7def63602 100644
--- a/Application/Base/Tool/Request.class.php
+++ b/Application/Base/Tool/Request.class.php
@@ -62,7 +62,8 @@ class Request {
     
     public function isIOS13()
     {
-        if (preg_match('/OS [1][3-9]_[1-9][_\d]* like Mac OS X/i')) {
+        $userAgent = $this->getUserAgent();
+        if (preg_match('/OS [1][3-9]_[1-9][_\d]* like Mac OS X/i', $userAgent)) {
             return true;
         }
         return false;