diff --git a/chrome/content/zotero/xpcom/zotero.js b/chrome/content/zotero/xpcom/zotero.js
index cb9b37032c..83f2904e35 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -720,7 +720,10 @@ Services.scriptloader.loadSubScript("resource://zotero/polyfill.js");
 			yield Zotero.Retractions.init();
 			
 			// Migrate fields from Extra that can be moved to item fields after a schema update
-			yield Zotero.Schema.migrateExtraFields();
+			//
+			// Disabled for now
+			//
+			//yield Zotero.Schema.migrateExtraFields();
 			
 			// Load all library data except for items, which are loaded when libraries are first
 			// clicked on or if otherwise necessary