diff --git a/sys/modules/acpi/acpi_asus/Makefile b/sys/modules/acpi/acpi_asus/Makefile
index a1791755a80..38f911ba1e4 100644
--- a/sys/modules/acpi/acpi_asus/Makefile
+++ b/sys/modules/acpi/acpi_asus/Makefile
@@ -4,7 +4,8 @@
 
 KMOD=	acpi_asus
 WARNS?=	2
-CFLAGS+= -I${.CURDIR}/../../../contrib/dev/acpica
+CFLAGS+= -I${.CURDIR}/../../../contrib/dev/acpica -DACPI_DEBUG=
 SRCS=	acpi_asus.c opt_acpi.h acpi_if.h bus_if.h device_if.h
+SRCS+= opt_ddb.h
 
 .include <bsd.kmod.mk>