--- loncom/lti/ltiauth.pm	2018/05/08 00:44:14	1.10
+++ loncom/lti/ltiauth.pm	2018/05/14 19:56:05	1.11
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Basic LTI Authentication Module
 #
-# $Id: ltiauth.pm,v 1.10 2018/05/08 00:44:14 raeburn Exp $
+# $Id: ltiauth.pm,v 1.11 2018/05/14 19:56:05 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -432,7 +432,7 @@ sub handler {
     my @lcroleorder = ('cc','in','ta','ep','st');
     my @ltiroleorder = ('Instructor','TeachingAssistant','Mentor','Learner');
     if ($params->{'roles'} =~ /,/) {
-        my @possltiroles = split(/\s*,\s*/,$params->{'role'});
+        my @possltiroles = split(/\s*,\s*/,$params->{'roles'});
         foreach my $ltirole (@ltiroleorder) {
             if (grep(/^\Q$ltirole\E$/,@possltiroles)) {
                 push(@ltiroles,$ltirole);