diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S
index 5b4514a..1374e59 100644
--- a/arch/alpha/kernel/systbls.S
+++ b/arch/alpha/kernel/systbls.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * arch/alpha/kernel/systbls.S
  *