diff --git a/arch/x86/include/asm/segment.h b/arch/x86/include/asm/segment.h
index 066aaf8..b20f9d6 100644
--- a/arch/x86/include/asm/segment.h
+++ b/arch/x86/include/asm/segment.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_X86_SEGMENT_H
 #define _ASM_X86_SEGMENT_H