--- loncom/homework/optionresponse.pm	2015/01/19 15:35:53	1.196
+++ loncom/homework/optionresponse.pm	2015/04/09 09:48:02	1.197
@@ -1,7 +1,7 @@
 # LearningOnline Network with CAPA
 # option list style responses
 #
-# $Id: optionresponse.pm,v 1.196 2015/01/19 15:35:53 goltermann Exp $
+# $Id: optionresponse.pm,v 1.197 2015/04/09 09:48:02 droeschl Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -128,7 +128,7 @@ sub start_foilgroup {
         maxcheck => 'Enter maximum number students may check (e.g., 3)',
         mincheck => 'Enter minimum number students need to check (e.g., 1)',
     );
-    $result.= (<<ENDTABLE, &Apache::loncommon::insert_folding_button());
+    $result.= sprintf(<<ENDTABLE, &Apache::loncommon::insert_folding_button());
       <tr><td>%s $lt{'sel'}</td>
         <td>
 	  $lt{'add'} <input type="text" name="$Apache::lonxml::curdepth.options" />