diff --git a/configs/mx6sabreauto_defconfig b/configs/mx6sabreauto_defconfig
index 77958c8..2e4e0ff 100644
--- a/configs/mx6sabreauto_defconfig
+++ b/configs/mx6sabreauto_defconfig
@@ -39,6 +39,7 @@
 CONFIG_CMD_FAT=y
 CONFIG_CMD_FS_GENERIC=y
 CONFIG_ENV_IS_IN_MMC=y
+CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
 CONFIG_DFU_MMC=y
 CONFIG_DFU_SF=y
 CONFIG_FSL_ESDHC=y