--- loncom/auth/lonacc.pm	2021/02/10 11:07:46	1.159.2.19
+++ loncom/auth/lonacc.pm	2021/02/10 11:36:15	1.159.2.20
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Cookie Based Access Handler
 #
-# $Id: lonacc.pm,v 1.159.2.19 2021/02/10 11:07:46 raeburn Exp $
+# $Id: lonacc.pm,v 1.159.2.20 2021/02/10 11:36:15 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -842,7 +842,7 @@ sub handler {
                             }
                             if ($invalidsymb) {
                                 if ($requrl eq '/adm/navmaps') {
-                                    undef(symb);
+                                    undef($symb);
                                 } else {
                                     $r->log_reason('Invalid symb for '.$requrl.': '.$symb);
                                     $env{'user.error.msg'}=