diff --git a/chrome/content/zotero/xpcom/storage/webdav.js b/chrome/content/zotero/xpcom/storage/webdav.js
index 04385867e..06de449ff 100644
--- a/chrome/content/zotero/xpcom/storage/webdav.js
+++ b/chrome/content/zotero/xpcom/storage/webdav.js
@@ -600,7 +600,7 @@ Zotero.Sync.Storage.WebDAV = (function () {
 					var buttonText = Zotero.getString('general.openDocumentation');
 					var func = function () {
 						var zp = Zotero.getActiveZoteroPane();
-						zp.loadURI("http://www.zotero.org/support/kb/cert_override", { shiftKey: true });
+						zp.loadURI("https://www.zotero.org/support/kb/cert_override", { shiftKey: true });
 					};
 				}
 				// In Firefox display a button to load the WebDAV URL
@@ -619,10 +619,7 @@ Zotero.Sync.Storage.WebDAV = (function () {
 					{
 						dialogText: msg,
 						dialogButtonText: buttonText,
-						dialogButtonCallback: function () {
-							var zp = Zotero.getActiveZoteroPane();
-							zp.loadURI(channel.URI.spec, { shiftKey: true });
-						}
+						dialogButtonCallback: func
 					}
 				);
 				throw e;