diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/tests/Makefile b/drivers/gpu/drm/amd/display/amdgpu_dm/tests/Makefile
index 616881fcb9af..e0549c04c62e 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/tests/Makefile
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/tests/Makefile
@@ -1,6 +1,8 @@
-# SPDX-License-Identifier: GPL-2.0
+# SPDX-License-Identifier: GPL-2.0 OR MIT
 #
 # Makefile for amdgpu_dm KUnit tests.
+#
+# Copyright 2026 Advanced Micro Devices, Inc.
 
 ccflags-y += -I$(src)/..
 ccflags-y += -I$(src)/../..