diff --git a/src/mainboard/system76/lemp9/acpi/backlight.asl b/src/mainboard/system76/lemp9/acpi/backlight.asl
index 600fd4bde2..952c9c7772 100644
--- a/src/mainboard/system76/lemp9/acpi/backlight.asl
+++ b/src/mainboard/system76/lemp9/acpi/backlight.asl
@@ -1,5 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <drivers/intel/gma/acpi/gma.asl>
+
 Scope (GFX0)
 {
        Name (BRIG, Package (22)