Index: trac/ticket/templates/report_view.html
===================================================================
--- trac/ticket/templates/report_view.html	(revision 7637)
+++ trac/ticket/templates/report_view.html	(working copy)
@@ -24,7 +24,7 @@
         ${wiki_to_html(context, description)}
       </div>
 
-      <form py:if="report.id != -1 and len(args) > 1" method="get" action="">
+      <form py:if="report.id != -1 and len(args)>args.has_key('USER')  " method="get" action="">
         <fieldset id="filters" >
           <legend class="foldable">Arguments</legend>
           <table summary="Report arguments">