diff --git a/arch/s390/kernel/sthyi.c b/arch/s390/kernel/sthyi.c
index 12981e197f01..db163cf3606a 100644
--- a/arch/s390/kernel/sthyi.c
+++ b/arch/s390/kernel/sthyi.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * store hypervisor information instruction emulation functions.
  *