--- rat/lonpageflip.pm	2014/05/20 20:40:46	1.85
+++ rat/lonpageflip.pm	2014/12/11 13:16:49	1.86
@@ -2,7 +2,7 @@
 #
 # Page flip handler
 #
-# $Id: lonpageflip.pm,v 1.85 2014/05/20 20:40:46 musolffc Exp $
+# $Id: lonpageflip.pm,v 1.86 2014/12/11 13:16:49 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -390,7 +390,7 @@ sub handler {
 	      untie(%hash);
 # --------------------------------------------------------- Store position info
               $cachehash{$startoutmap}{'last_direction'}=[$direction,'notasymb'];
-              foreach my $thismap (keys %cachehash) {
+              foreach my $thismap (keys(%cachehash)) {
 		  my $mapnum=$cachehash{$thismap}->{'mapnum'};
 		  delete($cachehash{$thismap}->{'mapnum'});
 		  &Apache::lonnet::symblist($thismap,