diff --git a/configs/tuge1_defconfig b/configs/tuge1_defconfig
index 894a79d..dbd832c 100644
--- a/configs/tuge1_defconfig
+++ b/configs/tuge1_defconfig
@@ -157,6 +157,7 @@
 CONFIG_MTDPARTS_DEFAULT="mtdparts=boot:768k(u-boot),128k(env),128k(envred),-(ubi0);"
 CONFIG_CMD_UBI=y
 # CONFIG_CMD_UBIFS is not set
+CONFIG_ENV_SOURCE_FILE="km83xx"
 CONFIG_ENV_OVERWRITE=y
 CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
 CONFIG_ENV_ADDR_REDUND=0xF00E0000