diff --git a/configs/rock2_defconfig b/configs/rock2_defconfig
index fc9ff78..0361256 100644
--- a/configs/rock2_defconfig
+++ b/configs/rock2_defconfig
@@ -7,6 +7,8 @@
 CONFIG_DEFAULT_DEVICE_TREE="rk3288-rock2-square"
 CONFIG_SPL_STACK_R=y
 CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN=0x2000
+# CONFIG_SPL_MMC_SUPPORT is not set
+CONFIG_ROCKCHIP_SPL_BACK_TO_BROM=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set