diff --git a/Documentation/scheduler/sched-preemption.rst b/Documentation/scheduler/sched-preemption.rst
index bfa22559c29b..b48e53587a7a 100644
--- a/Documentation/scheduler/sched-preemption.rst
+++ b/Documentation/scheduler/sched-preemption.rst
@@ -1,3 +1,5 @@
+.. SPDX-License-Identifier: GPL-2.0
+
 =====================
 Scheduler preemption
 =====================