diff --git a/koha-tmpl/intranet-tmpl/prog/js/letter.js b/koha-tmpl/intranet-tmpl/prog/js/letter.js
index 44524c0452..3c825f961d 100644
--- a/koha-tmpl/intranet-tmpl/prog/js/letter.js
+++ b/koha-tmpl/intranet-tmpl/prog/js/letter.js
@@ -235,7 +235,7 @@ $(document).ready(function() {
     });
 
     function insertValueQuery(containerid) {
-        var fieldset = $("#" + containerid);
+        var fieldset = $("#" + containerid + "_panel");
         var myQuery = $(fieldset).find('textarea[name="content"]');
         var myListBox = $(fieldset).find('select[name="SQLfieldname"]');