diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig
index 167e5dc7eadd7ce8dadf9866c0b8f1311494ee5a..23537bc8c827c7accea2ea4aa9ce7107e9fa5994 100644
--- a/fs/btrfs/Kconfig
+++ b/fs/btrfs/Kconfig
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+
 config BTRFS_FS
 	tristate "Btrfs filesystem support"
 	select LIBCRC32C