diff --git a/UI/Templates/UIxJSClose.wox b/UI/Templates/UIxJSClose.wox
index bb209932a..c110cb054 100644
--- a/UI/Templates/UIxJSClose.wox
+++ b/UI/Templates/UIxJSClose.wox
@@ -6,7 +6,7 @@
 <html><head></head><body style="background-color: #dbdad5;"
         ><script type="text/javascript"
           ><var:if condition="hasRefreshMethod"
-            >window.opener.setTimeout('<var:string value="refreshMethod"
+            >if (window.opener) window.opener.setTimeout('<var:string value="refreshMethod"
               const:escapeHTML="NO" />;', 50);</var:if
             >window.close();</script
 ></body></html
