--- loncom/homework/inputtags.pm	2016/08/05 23:17:10	1.333.2.4
+++ loncom/homework/inputtags.pm	2017/06/13 16:20:40	1.333.2.4.2.1
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # input  definitons
 #
-# $Id: inputtags.pm,v 1.333.2.4 2016/08/05 23:17:10 raeburn Exp $
+# $Id: inputtags.pm,v 1.333.2.4.2.1 2017/06/13 16:20:40 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -1318,11 +1318,12 @@ sub decideoutput {
 	&& &hide_award($award)) {
         $message = &mt("Answer Submitted: Your final submission will be graded after the due date.");
         my @interval= &Apache::lonnet::EXT("resource.$part.interval");
-        if ($interval[0] =~ /\d+/) {
+        if ($interval[0]) {
             my $first_access=&Apache::lonnet::get_first_access($interval[1]);
             if (defined($first_access)) {
                 my $due_date= &Apache::lonnet::EXT("resource.$part.duedate");
-                unless (($due_date) && ($due_date < $first_access + $interval[0])) { 
+                my ($timelimit) = ($interval[0] =~ /^(\d+)/);
+                unless (($due_date) && ($due_date < $first_access + $timelimit)) { 
                     $message = &mt("Answer Submitted: Your final submission will be graded when the time limit is reached.");
                 }
             }