diff --git a/Documentation/filesystems/index.rst b/Documentation/filesystems/index.rst
index 53f46a8..e7b46da 100644
--- a/Documentation/filesystems/index.rst
+++ b/Documentation/filesystems/index.rst
@@ -1,3 +1,5 @@
+.. _filesystems_index:
+
 ===============================
 Filesystems in the Linux kernel
 ===============================