diff --git a/sys/mips/atheros/ar71xx_spi.c b/sys/mips/atheros/ar71xx_spi.c
index 92cc3654d80..095f9306e4d 100644
--- a/sys/mips/atheros/ar71xx_spi.c
+++ b/sys/mips/atheros/ar71xx_spi.c
@@ -108,7 +108,7 @@ ar71xx_spi_attach(device_t dev)
 	SPI_WRITE(sc, AR71XX_SPI_CTRL, 0x43);
 	SPI_WRITE(sc, AR71XX_SPI_IO_CTRL, SPI_IO_CTRL_CSMASK);
 
-	device_add_child(dev, "spibus", 0);
+	device_add_child(dev, "spibus", -1);
 	return (bus_generic_attach(dev));
 }