diff --git a/sys/modules/gpio/gpiobus/Makefile b/sys/modules/gpio/gpiobus/Makefile
index 24a0f1314a75..458d56d8b935 100644
--- a/sys/modules/gpio/gpiobus/Makefile
+++ b/sys/modules/gpio/gpiobus/Makefile
@@ -36,6 +36,10 @@ SRCS=	gpiobus.c gpioc.c
 SRCS+=	gpio_if.c gpio_if.h gpiobus_if.c gpiobus_if.h ofw_bus_if.h
 SRCS+=	device_if.h bus_if.h opt_platform.h
 
+.if !empty(OPT_FDT)
+SRCS+=	ofw_gpiobus.c
+.endif
+
 CFLAGS+=  -I. -I${SRCTOP}/sys/dev/gpio/
 
 .include <bsd.kmod.mk>