diff --git a/configs/firefly-rk3288_defconfig b/configs/firefly-rk3288_defconfig
index d2bd750..dc0fda2 100644
--- a/configs/firefly-rk3288_defconfig
+++ b/configs/firefly-rk3288_defconfig
@@ -11,6 +11,7 @@
 CONFIG_ENV_OFFSET=0x3F8000
 CONFIG_DEFAULT_DEVICE_TREE="rk3288-firefly"
 CONFIG_DM_RESET=y
+CONFIG_SYS_MONITOR_LEN=614400
 CONFIG_ROCKCHIP_RK3288=y
 CONFIG_TARGET_FIREFLY_RK3288=y
 CONFIG_SPL_STACK_R_ADDR=0x80000
@@ -20,7 +21,6 @@
 CONFIG_DEBUG_UART_CLOCK=24000000
 CONFIG_SYS_LOAD_ADDR=0x800800
 CONFIG_DEBUG_UART=y
-CONFIG_SYS_MONITOR_LEN=614400
 # CONFIG_ANDROID_BOOT_IMAGE is not set
 CONFIG_USE_PREBOOT=y
 CONFIG_DEFAULT_FDT_FILE="rk3288-firefly.dtb"