diff --git a/apps/files_sharing/lib/Controller/ShareController.php b/apps/files_sharing/lib/Controller/ShareController.php
index c4d9e739658..f793d35e3ae 100644
--- a/apps/files_sharing/lib/Controller/ShareController.php
+++ b/apps/files_sharing/lib/Controller/ShareController.php
@@ -174,7 +174,7 @@ class ShareController extends Controller {
 	 * @param string $password
 	 * @return RedirectResponse|TemplateResponse|NotFoundResponse
 	 */
-	public function authenticate($token, $redirect = 'preview', $password = '') {
+	public function authenticate($token, $redirect, $password = '') {
 
 		// Check whether share exists
 		try {