--- loncom/interface/lontiny.pm	2022/06/30 21:04:14	1.12
+++ loncom/interface/lontiny.pm	2022/07/02 17:17:47	1.13
@@ -2,7 +2,7 @@
 # Extract domain, courseID, and symb from a shortened URL,
 # and switch role to a role in designated course.
 #
-# $Id: lontiny.pm,v 1.12 2022/06/30 21:04:14 raeburn Exp $
+# $Id: lontiny.pm,v 1.13 2022/07/02 17:17:47 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -401,12 +401,12 @@ sub launch_check {
                     if ($linkprotector) {
                         &Apache::lonnet::appenv({'request.linkprot' => $linkprotector.':'.$linkproturi});
                     } elsif ($env{'request.linkprot'}) {
-                        &Apache::lonnet::delenv({'request.linkprot'});
+                        &Apache::lonnet::delenv('request.linkprot);
                     }
                     if ($linkkey ne '') {
                         &Apache::lonnet::appenv({'request.linkkey' => $linkkey});
                     } elsif ($env{'request.linkkey'} ne '') {
-                        &Apache::lonnet::delenv({'request.linkkey'});
+                        &Apache::lonnet::delenv('request.linkkey');
                     }
                     $newlauncher = 1;
                 }
@@ -422,12 +422,12 @@ sub launch_check {
         if ($linkprotector) {
             &Apache::lonnet::appenv({'request.linkprot' => $linkprotector.':'.$linkproturi});
         } elsif ($env{'request.linkprot'}) {
-            &Apache::lonnet::delenv({'request.linkprot'});
+            &Apache::lonnet::delenv('request.linkprot);
         }
         if ($linkkey ne '') {
             &Apache::lonnet::appenv({'request.linkkey' => $linkkey});
         } else {
-            &Apache::lonnet::delenv({'request.linkkey'});
+            &Apache::lonnet::delenv('request.linkkey');
         }
         &Apache::lonnet::appenv({'request.deeplink.login' => $linkuri});
         if ($env{'request.deeplink.target'} ne '') {