--- loncom/interface/lonfeedback.pm	2009/02/10 09:30:16	1.264
+++ loncom/interface/lonfeedback.pm	2009/02/18 07:06:15	1.265
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Feedback
 #
-# $Id: lonfeedback.pm,v 1.264 2009/02/10 09:30:16 schafran Exp $
+# $Id: lonfeedback.pm,v 1.265 2009/02/18 07:06:15 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -3590,7 +3590,7 @@ ENDREDIR
 	  &Apache::lonnet::appenv({'environment.threadeddiscussion' => 'on'});
       } else {
  	  &Apache::lonnet::del('environment',['threadeddiscussion']);
-	  &Apache::lonnet::delenv('environment\.threadeddiscussion');
+	  &Apache::lonnet::delenv('environment.threadeddiscussion');
       }
       &redirect_back($r,$feedurl,&mt('Changed discussion view mode').'<br />',
 		     '0','0','','',$env{'form.previous'},undef,undef,undef,