--- loncom/auth/lonacc.pm	2021/02/09 22:17:40	1.187
+++ loncom/auth/lonacc.pm	2021/02/10 11:35:40	1.188
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Cookie Based Access Handler
 #
-# $Id: lonacc.pm,v 1.187 2021/02/09 22:17:40 raeburn Exp $
+# $Id: lonacc.pm,v 1.188 2021/02/10 11:35:40 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -875,7 +875,7 @@ 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'}=