diff --git a/lib/function.php b/lib/function.php
index a48927d..c7f259d 100644
--- a/lib/function.php
+++ b/lib/function.php
@@ -536,7 +536,7 @@ function doreplace2($msg, $options='0|0'){
$msg=preg_replace("'\[url\](.*?)\[/url\]'si", '\\1', $msg);
$msg=preg_replace("'\[url=(.*?)\](.*?)\[/url\]'si", '\\2', $msg);
$msg=str_replace('http://nightkev.110mb.com/justus_layout.css','about:blank',$msg);
- $msg=preg_replace("'\[youtube\](?:https://(?:www\.)?youtu(?:\.be/|be\.com/watch\?v=))?([\w-]{11})(?:(?:\?|\&)t=\w{1,})?\[/youtube\]'si", '', $msg);
+ $msg=preg_replace("'\[youtube\](?:https://(?:www\.)?youtu(?:\.be/|be\.com/watch\?v=))?([\w-]{11}(?:(?:\?|\&)t=\w{1,})?)\[/youtube\]'si", '', $msg);
do {