diff --git a/api/src/Vfs.php b/api/src/Vfs.php
index 545959b440..f61254562b 100644
--- a/api/src/Vfs.php
+++ b/api/src/Vfs.php
@@ -90,6 +90,10 @@ class Vfs
 	 * Excecutable bit, here only use to check if user is allowed to search dirs
 	 */
 	const EXECUTABLE = 1;
+	/**
+	 * mode-bits, which have to be set for links
+	 */
+	const MODE_LINK = Vfs\StreamWrapper::MODE_LINK;
 	/**
 	 * Name of the lock table
 	 */