diff --git a/src/include/acpi/acpi.h b/src/include/acpi/acpi.h
index acd5538709..fe7e5fd829 100644
--- a/src/include/acpi/acpi.h
+++ b/src/include/acpi/acpi.h
@@ -70,6 +70,7 @@ enum coreboot_acpi_ids {
 	COREBOOT_ACPI_ID_CBTABLE	= 0x0000, /* BOOT0000 */
 	COREBOOT_ACPI_ID_IGD_GMBUS_ARB  = 0x0001, /* BOOT0001 */
 	COREBOOT_ACPI_ID_IGD_GMBUS_LINK = 0x0002, /* BOOT0002 */
+	COREBOOT_ACPI_ID_AMDGFX_ACP	= 0x0003, /* BOOT0003 */
 	COREBOOT_ACPI_ID_MAX		= 0xFFFF, /* BOOTFFFF */
 };