From c5966ed21b56f083e090a0b1b48e567383e7ee39 Mon Sep 17 00:00:00 2001
From: Robin McCorkell <rmccorkell@owncloud.com>
Date: Tue, 20 Oct 2015 13:26:46 +0100
Subject: [PATCH] Only set value if it exists in the StorageConfig

---
 apps/files_external/js/settings.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/apps/files_external/js/settings.js b/apps/files_external/js/settings.js
index 3152c644b3..e16944eaa1 100644
--- a/apps/files_external/js/settings.js
+++ b/apps/files_external/js/settings.js
@@ -790,8 +790,11 @@ MountConfigListView.prototype = _.extend({
 		if (storageConfig.backendOptions) {
 			$td.children().each(function() {
 				var input = $(this);
-				input.val(storageConfig.backendOptions[input.data('parameter')]);
-				highlightInput(input);
+				var val = storageConfig.backendOptions[input.data('parameter')];
+				if (val !== undefined) {
+					input.val(storageConfig.backendOptions[input.data('parameter')]);
+					highlightInput(input);
+				}
 			});
 		}