diff --git a/configs/T4240RDB_defconfig b/configs/T4240RDB_defconfig
index 57d4ea6..784a45f 100644
--- a/configs/T4240RDB_defconfig
+++ b/configs/T4240RDB_defconfig
@@ -37,6 +37,8 @@
 CONFIG_ENV_ADDR=0xEFF20000
 CONFIG_USE_BOOTFILE=y
 CONFIG_BOOTFILE="uImage"
+CONFIG_USE_ETHPRIME=y
+CONFIG_ETHPRIME="FM1@DTSEC1"
 CONFIG_DM=y
 CONFIG_SYS_SATA_MAX_DEVICE=2
 CONFIG_FSL_CAAM=y