diff --git a/configs/M54418TWR_serial_mii_defconfig b/configs/M54418TWR_serial_mii_defconfig
index 8b72bd3..8fc6879 100644
--- a/configs/M54418TWR_serial_mii_defconfig
+++ b/configs/M54418TWR_serial_mii_defconfig
@@ -1,6 +1,7 @@
 CONFIG_M68K=y
 CONFIG_SYS_TEXT_BASE=0x47E00000
 CONFIG_TARGET_M54418TWR=y
+CONFIG_DEFAULT_DEVICE_TREE="M54418TWR_serial_mii"
 CONFIG_SYS_EXTRA_OPTIONS="CF_SBF,SYS_SERIAL_BOOT,SYS_INPUT_CLKSRC=25000000"
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="root=/dev/nfs rw nfsroot=192.168.1.1:/tftpboot/192.168.1.2  ip=192.168.1.2:192.168.1.1:192.168.1.1: 255.255.255.0::eth0:off:rw console=ttyS0,115200"