diff --git a/configs/M54418TWR_serial_rmii_defconfig b/configs/M54418TWR_serial_rmii_defconfig
index f69f405..a239f4a 100644
--- a/configs/M54418TWR_serial_rmii_defconfig
+++ b/configs/M54418TWR_serial_rmii_defconfig
@@ -20,6 +20,8 @@
 CONFIG_CMD_PING=y
 CONFIG_CMD_CACHE=y
 CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_USE_ENV_SPI_CS=y
+CONFIG_ENV_SPI_CS=1
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_ATMEL=y
 CONFIG_MII=y