--- loncom/interface/domainprefs.pm	2017/11/30 15:15:14	1.320
+++ loncom/interface/domainprefs.pm	2017/12/06 23:41:19	1.321
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set domain-wide configuration settings
 #
-# $Id: domainprefs.pm,v 1.320 2017/11/30 15:15:14 raeburn Exp $
+# $Id: domainprefs.pm,v 1.321 2017/12/06 23:41:19 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -11378,7 +11378,7 @@ sub modify_lti {
             }
         }
         foreach my $field ('passback','roster') {
-            if ($env{'form.ltitools_'.$idx.'_'.$field}) {
+            if ($env{'form.lti_'.$field.'_'.$idx}) {
                 $confhash{$itemid}{$field} = 1;
             }
         }