diff --git a/chrome/content/zotero/progressWindow.xhtml b/chrome/content/zotero/progressWindow.xhtml
index b8c6e486ac..1e328250cc 100644
--- a/chrome/content/zotero/progressWindow.xhtml
+++ b/chrome/content/zotero/progressWindow.xhtml
@@ -38,10 +38,9 @@
         windowtype="alert:alert">
 		
 	<vbox id="zotero-progress-text-box" flex="1" style="padding: 10px">
-		<hbox align="stretch">
+		<hbox id="zotero-progress-text-headline" align="stretch">
 			<label id="progress-label" flex="1"/>
 		</hbox>
-		<html:progress id="progress-indicator" max="100"/>
 	</vbox>
 	<script>
 		window.addEventListener("DOMContentLoaded", () => window.sizeToContent())
diff --git a/chrome/content/zotero/xpcom/progressWindow.js b/chrome/content/zotero/xpcom/progressWindow.js
index ac94fec8ef..96e91fac74 100644
--- a/chrome/content/zotero/xpcom/progressWindow.js
+++ b/chrome/content/zotero/xpcom/progressWindow.js
@@ -124,7 +124,7 @@ Zotero.ProgressWindow = function(options = {}) {
 		}
 		
 		if (_window) {
-			_progressWindow = _window.openDialog("chrome://zotero/content/progressWindow.xul",
+			_progressWindow = _window.openDialog("chrome://zotero/content/progressWindow.xhtml",
 				"", "chrome,dialog=no,titlebar=no,alwaysontop=yes");
 			_window.addEventListener('close', () => {
 				this.close();
@@ -133,7 +133,7 @@ Zotero.ProgressWindow = function(options = {}) {
 		else {
 			let ww = Components.classes["@mozilla.org/embedcomp/window-watcher;1"]
 				.getService(Components.interfaces.nsIWindowWatcher);
-			_progressWindow = ww.openWindow(null, "chrome://zotero/content/progressWindow.xul",
+			_progressWindow = ww.openWindow(null, "chrome://zotero/content/progressWindow.xhtml",
 				"", "chrome,dialog=no,titlebar=no,alwaysontop=yes", null);
 		}
 		_progressWindow.addEventListener("load", _onWindowLoaded, false);