diff --git a/sys/modules/acpi/Makefile b/sys/modules/acpi/Makefile
index fc77444f2dd8..80f7fb990514 100644
--- a/sys/modules/acpi/Makefile
+++ b/sys/modules/acpi/Makefile
@@ -36,7 +36,7 @@ SRCS+=	OsdStream.c OsdSynch.c OsdEnvironment.c
 SRCS+=	opt_acpi.h opt_ddb.h
 SRCS+=	device_if.h bus_if.h pci_if.h pcib_if.h isa_if.h
 
-CFLAGS+=   -I${.CURDIR}/../../contrib/dev/acpica/Subsystem/Include
+CFLAGS+=   -I${.CURDIR}/../../contrib/dev/acpica
 
 opt_ddb.h: Makefile
 	echo '#define DDB 1'  >opt_ddb.h
diff --git a/sys/modules/acpica/Makefile b/sys/modules/acpica/Makefile
index fc77444f2dd8..80f7fb990514 100644
--- a/sys/modules/acpica/Makefile
+++ b/sys/modules/acpica/Makefile
@@ -36,7 +36,7 @@ SRCS+=	OsdStream.c OsdSynch.c OsdEnvironment.c
 SRCS+=	opt_acpi.h opt_ddb.h
 SRCS+=	device_if.h bus_if.h pci_if.h pcib_if.h isa_if.h
 
-CFLAGS+=   -I${.CURDIR}/../../contrib/dev/acpica/Subsystem/Include
+CFLAGS+=   -I${.CURDIR}/../../contrib/dev/acpica
 
 opt_ddb.h: Makefile
 	echo '#define DDB 1'  >opt_ddb.h