diff --git a/module/file/view/export.html.php b/module/file/view/export.html.php
index 68eadc2323..aca7c5caad 100644
--- a/module/file/view/export.html.php
+++ b/module/file/view/export.html.php
@@ -16,6 +16,8 @@
 <script>
 function setDownloading()
 {
+    if($.browser.opera) return true;   // Opera don't support, omit it.
+
     $.cookie('downloading', 0);
     time = setInterval("closeWindow()", 300);
     return true;