diff --git a/configs/evb-px5_defconfig b/configs/evb-px5_defconfig
index 5a06b2a..1d2d8e1 100644
--- a/configs/evb-px5_defconfig
+++ b/configs/evb-px5_defconfig
@@ -2,7 +2,6 @@
 CONFIG_ARCH_ROCKCHIP=y
 CONFIG_SYS_TEXT_BASE=0x00200000
 CONFIG_ROCKCHIP_RK3368=y
-CONFIG_ROCKCHIP_SPL_RESERVE_IRAM=0x40000
 CONFIG_TPL_LIBCOMMON_SUPPORT=y
 CONFIG_TPL_LIBGENERIC_SUPPORT=y
 CONFIG_SPL_DRIVERS_MISC_SUPPORT=y