diff --git a/PVE/Service/pveproxy.pm b/PVE/Service/pveproxy.pm
index 2b39cae9..5ecc54b9 100755
--- a/PVE/Service/pveproxy.pm
+++ b/PVE/Service/pveproxy.pm
@@ -181,7 +181,7 @@ sub get_index {
 		$lang = $newlang;
 	    }
 	}
-	my $ticket = PVE::REST::extract_auth_cookie($cookie);
+	my $ticket = $server->extract_auth_cookie($cookie);
 	if (($username = PVE::AccessControl::verify_ticket($ticket, 1))) {
 	    $token = PVE::AccessControl::assemble_csrf_prevention_token($username);
 	}