diff --git a/chrome/content/zotero/standalone/basicViewer.xhtml b/chrome/content/zotero/standalone/basicViewer.xhtml
index 2161ec677e..5b752de2ac 100644
--- a/chrome/content/zotero/standalone/basicViewer.xhtml
+++ b/chrome/content/zotero/standalone/basicViewer.xhtml
@@ -49,6 +49,7 @@
persist="screenX screenY width height sizemode">
+