diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 33a15a1d818ca2c52c3fcdcfb49b5f1b58cbe715..75f9383f5b9be6f93fa711ea4f5f41754528ee51 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1296,7 +1296,7 @@ amdgpu_dm_register_backlight_device(struct amdgpu_display_manager *dm)
 			&amdgpu_dm_backlight_ops,
 			&props);
 
-	if (NULL == dm->backlight_dev)
+	if (IS_ERR(dm->backlight_dev))
 		DRM_ERROR("DM: Backlight registration failed!\n");
 	else
 		DRM_DEBUG_DRIVER("DM: Registered Backlight device: %s\n", bl_name);