--- loncom/homework/lonhomework.pm	2014/08/07 19:53:19	1.345
+++ loncom/homework/lonhomework.pm	2014/12/11 01:23:55	1.346
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Homework handler
 #
-# $Id: lonhomework.pm,v 1.345 2014/08/07 19:53:19 musolffc Exp $
+# $Id: lonhomework.pm,v 1.346 2014/12/11 01:23:55 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -590,7 +590,7 @@ sub showarray {
 sub showhashsubset {
     my ($hash,$keyre) = @_;
     my $resultkey;
-    foreach $resultkey (sort keys %$hash) {
+    foreach $resultkey (sort(keys(%$hash))) {
 	if ($resultkey !~ /$keyre/) { next; }
 	if (ref($$hash{$resultkey})  eq 'ARRAY' ) {
 	    &Apache::lonxml::debug("$resultkey ---- ".