diff --git a/lib/Froxlor/Cron/Http/Nginx.php b/lib/Froxlor/Cron/Http/Nginx.php
index 95c4d7f95..18831b320 100644
--- a/lib/Froxlor/Cron/Http/Nginx.php
+++ b/lib/Froxlor/Cron/Http/Nginx.php
@@ -184,7 +184,7 @@ public function createIpPort()
 					$this->nginx_data[$vhost_filename] .= "\t" . 'http3_hq on;' . "\n";
 					$this->nginx_data[$vhost_filename] .= "\t" . 'quic_gso on;' . "\n";
 					$this->nginx_data[$vhost_filename] .= "\t" . 'quic_retry on;' . "\n";
-					$this->nginx_data[$vhost_filename] .= "\t" . 'add_header Alt-Svc \'h3=":' . $port . '" ma=86400\';' . "\n";
+					$this->nginx_data[$vhost_filename] .= "\t" . 'add_header Alt-Svc \'h3=":' . $port . '"; ma=86400\';' . "\n";
 				}
 				$this->nginx_data[$vhost_filename] .= "\t" . '# Froxlor default vhost' . "\n";