diff --git a/chrome/content/zotero/xpcom/zotero.js b/chrome/content/zotero/xpcom/zotero.js
index 3539336506..e59dee7a33 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -759,10 +759,7 @@ const { CommandLineOptions } = ChromeUtils.importESModule("chrome://zotero/conte
 			//
 			// By default this won't run until after the initial auto-sync, to allow the same
 			// changes from elsewhere to be synced down. To test migration after the online library
-			// has been updated by a previous run, disable auto-sync and uncomment this line
-			// instead of the following one
-			//Zotero.Schema.schemaUpdatePromise.then(async () => {
-			//
+			// has been updated by a previous run, disable auto-sync.
 			Zotero.startupSyncPromise.then(async () => {
 				let progressWin;
 				let itemProgress;