diff --git a/src/include/device/device.h b/src/include/device/device.h
index d2dcb5b..43ac66d 100644
--- a/src/include/device/device.h
+++ b/src/include/device/device.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
 #ifndef DEVICE_H
 
 #define DEVICE_H