diff --git a/configs/am335x_boneblack_defconfig b/configs/am335x_boneblack_defconfig
index 7039c6b..5688e44 100644
--- a/configs/am335x_boneblack_defconfig
+++ b/configs/am335x_boneblack_defconfig
@@ -23,6 +23,7 @@
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_ENV_IS_IN_MMC=y
+CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
 CONFIG_BOOTCOUNT_LIMIT=y
 CONFIG_DFU_TFTP=y
 CONFIG_DFU_MMC=y