--- loncom/xml/lonxml.pm	2016/08/09 23:43:39	1.556
+++ loncom/xml/lonxml.pm	2017/02/16 18:17:53	1.557
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # XML Parser Module 
 #
-# $Id: lonxml.pm,v 1.556 2016/08/09 23:43:39 raeburn Exp $
+# $Id: lonxml.pm,v 1.557 2017/02/16 18:17:53 damieng Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -991,7 +991,7 @@ sub decreasedepth {
 sub get_id {
     my ($parstack,$safeeval)=@_;
     my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
-    if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) {
+    if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\s\-])/) {
 	&error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
     }
     if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }