diff --git a/drivers/gpu/drm/tests/drm_kunit_helpers.c b/drivers/gpu/drm/tests/drm_kunit_helpers.c
index eea450de7de8f..f1662091f250c 100644
--- a/drivers/gpu/drm/tests/drm_kunit_helpers.c
+++ b/drivers/gpu/drm/tests/drm_kunit_helpers.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0
+
 #include <drm/drm_drv.h>
 #include <drm/drm_managed.h>
 
diff --git a/drivers/gpu/drm/tests/drm_kunit_helpers.h b/drivers/gpu/drm/tests/drm_kunit_helpers.h
index f13a18dd1c6d5..20ab6eec4c891 100644
--- a/drivers/gpu/drm/tests/drm_kunit_helpers.h
+++ b/drivers/gpu/drm/tests/drm_kunit_helpers.h
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0
+
 #ifndef DRM_KUNIT_HELPERS_H_
 #define DRM_KUNIT_HELPERS_H_