diff --git a/web/skins/classic/views/js/monitorprobe.js b/web/skins/classic/views/js/monitorprobe.js
index 1b628ed69..96f0c701e 100644
--- a/web/skins/classic/views/js/monitorprobe.js
+++ b/web/skins/classic/views/js/monitorprobe.js
@@ -1,6 +1,8 @@
 function submitCamera( element ) {
   var form = element.form;
-  form.target = opener.name;
+  if (opener) {
+    form.target = opener.name;
+  }
   form.view.value = 'monitor';
   form.submit();
 }