diff --git a/chrome/content/zotero/standalone/standalone.js b/chrome/content/zotero/standalone/standalone.js
index b18d4a06c8..2d0f99fc00 100644
--- a/chrome/content/zotero/standalone/standalone.js
+++ b/chrome/content/zotero/standalone/standalone.js
@@ -37,7 +37,7 @@ const ZoteroStandalone = new function() {
 			if(!Zotero) {
 				throw true;
 			}
-			if(Zotero.initializationZotero.Promise.isPending()) {
+			if(Zotero.initializationPromise.isPending()) {
 				Zotero.showZoteroPaneProgressMeter();
 			}
 			return Zotero.initializationPromise;