diff --git a/chrome/content/zotero/xpcom/zotero.js b/chrome/content/zotero/xpcom/zotero.js
index c2fdbddd0..a0b5dc92f 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -1393,6 +1393,8 @@ Zotero.Prefs = new function(){
 		}
 		else if (commonsEnable == 'false') {
 			Zotero.Commons.enabled = false;
+			Zotero.Commons.accessKey = '';
+			Zotero.Commons.secretKey = ''
 			ZoteroPane.collectionsView.refresh();
 		}
 	}