--- loncom/interface/coursecatalog.pm	2019/07/21 14:04:39	1.99
+++ loncom/interface/coursecatalog.pm	2019/07/21 14:26:02	1.100
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler for displaying the course catalog interface
 #
-# $Id: coursecatalog.pm,v 1.99 2019/07/21 14:04:39 raeburn Exp $
+# $Id: coursecatalog.pm,v 1.100 2019/07/21 14:26:02 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -595,7 +595,7 @@ sub validate_input {
     }
     if (exists($env{'form.uniquecode'})) {
         unless ($env{'form.uniquecode'} =~ /^\w{6}$/) {
-            delete(env{'form.uniquecode'});
+            delete($env{'form.uniquecode'});
         }
     }
     if (exists($env{'form.wasactive'})) {