diff --git a/configs/A20-OLinuXino_MICRO_defconfig b/configs/A20-OLinuXino_MICRO_defconfig
index e61067d..46d2140 100644
--- a/configs/A20-OLinuXino_MICRO_defconfig
+++ b/configs/A20-OLinuXino_MICRO_defconfig
@@ -9,4 +9,5 @@
 CONFIG_DEFAULT_DEVICE_TREE="sun7i-a20-olinuxino-micro"
 CONFIG_SPL=y
 CONFIG_SYS_EXTRA_OPTIONS="AXP209_POWER,SUNXI_GMAC,AHCI,SATAPWR=SUNXI_GPB(8),USB_EHCI"
+CONFIG_CMD_SETEXPR=y
 CONFIG_ETH_DESIGNWARE=y