diff --git a/view/template/acquisition/youtube_edit.php b/view/template/acquisition/youtube_edit.php
index a85fbb2d..ee0b202c 100644
--- a/view/template/acquisition/youtube_edit.php
+++ b/view/template/acquisition/youtube_edit.php
@@ -5,7 +5,7 @@ $email = Request::encodeStringFromUser($_POST['new_email']);
 $sync_consent = isset($_POST['sync_consent']);
 
 
-if (!preg_match("/@[A-Za-z0-9_-]+$/", $channel_name)) {
+if (!preg_match("/@[A-Za-z0-9-]+$/", $channel_name)) {
     $channel_name = "@" . $channel_name;
 }