--- comment.module.old	2004-05-08 18:07:28.000000000 +1200
+++ comment.module	2004-05-08 18:12:09.000000000 +1200
@@ -1299,6 +1299,9 @@
   if ($filters) {
     return "<select name=\"threshold\">$filters</select>\n";
   }
+  else {
+    return "<input type=\"hidden\" name=\"threshold\" value=\"$threshold\" />\n";
+  }
 }
 
 function comment_controls($threshold = 1, $mode = 3, $order = 1, $comments_per_page = 50) {