diff --git a/apps/files_external/js/settings.js b/apps/files_external/js/settings.js
index 976c0c00b891d..4e35ea531eb6f 100644
--- a/apps/files_external/js/settings.js
+++ b/apps/files_external/js/settings.js
@@ -960,7 +960,7 @@ MountConfigListView.prototype = _.extend({
 			success: function(result) {
 				var onCompletion = jQuery.Deferred();
 				$.each(result, function(i, storageParams) {
-					storageParams.mountPoint = storageParams.mountPoint.substr(1); // trim leading slash
+					storageParams.mountPoint = (storageParams.mountPoint === '/')? '/' : storageParams.mountPoint.substr(1); // trim leading slash
 					var storageConfig = new self._storageConfigClass();
 					_.extend(storageConfig, storageParams);
 					var $tr = self.newStorage(storageConfig, onCompletion);
diff --git a/apps/files_external/lib/Controller/StoragesController.php b/apps/files_external/lib/Controller/StoragesController.php
index ef7cc8c6e4f04..d962848bd7888 100644
--- a/apps/files_external/lib/Controller/StoragesController.php
+++ b/apps/files_external/lib/Controller/StoragesController.php
@@ -143,7 +143,7 @@ protected function createStorage(
 	 */
 	protected function validate(StorageConfig $storage) {
 		$mountPoint = $storage->getMountPoint();
-		if ($mountPoint === '' || $mountPoint === '/') {
+		if ($mountPoint === '') {
 			return new DataResponse(
 				array(
 					'message' => (string)$this->l10n->t('Invalid mount point')