diff --git a/kernel/sched/autogroup.c b/kernel/sched/autogroup.c
index de6d7f4..a43df51 100644
--- a/kernel/sched/autogroup.c
+++ b/kernel/sched/autogroup.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include "sched.h"
 
 #include <linux/proc_fs.h>