diff --git a/include/efi.h b/include/efi.h
index e1854ecd23bb8845ee1ed812ef19607a95ec2a68..b1deb609b464e737459af802fd1728d8e785fd09 100644
--- a/include/efi.h
+++ b/include/efi.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Extensible Firmware Interface
  * Based on 'Extensible Firmware Interface Specification' version 0.9,