diff --git a/package/boot/uboot-rockchip/patches/317-rockchip-rk3566-Add-FriendlyARM-NanoPi-R3S.patch b/package/boot/uboot-rockchip/patches/317-rockchip-rk3566-Add-FriendlyARM-NanoPi-R3S.patch
index 0dce1df54..f1d2f9523 100644
--- a/package/boot/uboot-rockchip/patches/317-rockchip-rk3566-Add-FriendlyARM-NanoPi-R3S.patch
+++ b/package/boot/uboot-rockchip/patches/317-rockchip-rk3566-Add-FriendlyARM-NanoPi-R3S.patch
@@ -12,7 +12,7 @@
 +};
 --- /dev/null
 +++ b/configs/nanopi-r3s-rk3566_defconfig
-@@ -0,0 +1,84 @@
+@@ -0,0 +1,85 @@
 +CONFIG_ARM=y
 +CONFIG_SKIP_LOWLEVEL_INIT=y
 +CONFIG_COUNTER_FREQUENCY=24000000
@@ -24,6 +24,7 @@
 +CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0xc00000
 +CONFIG_DEFAULT_DEVICE_TREE="rockchip/rk3566-nanopi-r3s"
 +CONFIG_ROCKCHIP_RK3568=y
++CONFIG_SYS_MALLOC_F_LEN=0x4000
 +CONFIG_SPL_ROCKCHIP_BACK_TO_BROM=y
 +CONFIG_SPL_ROCKCHIP_COMMON_BOARD=y
 +CONFIG_SPL_MMC=y