diff --git a/Documentation/filesystems/ext3.txt b/Documentation/filesystems/ext3.rst
similarity index 88%
rename from Documentation/filesystems/ext3.txt
rename to Documentation/filesystems/ext3.rst
index 58758fbef9e0..c06cec3a8fdc 100644
--- a/Documentation/filesystems/ext3.txt
+++ b/Documentation/filesystems/ext3.rst
@@ -1,4 +1,6 @@
+.. SPDX-License-Identifier: GPL-2.0
 
+===============
 Ext3 Filesystem
 ===============
 
diff --git a/Documentation/filesystems/index.rst b/Documentation/filesystems/index.rst
index 102b3b65486a..aa2c3d1de3de 100644
--- a/Documentation/filesystems/index.rst
+++ b/Documentation/filesystems/index.rst
@@ -63,6 +63,7 @@ Documentation for filesystem implementations.
    efivarfs
    erofs
    ext2
+   ext3
    fuse
    overlayfs
    virtiofs