diff --git a/arch/arm/mach-rockchip/rk3368/Kconfig b/arch/arm/mach-rockchip/rk3368/Kconfig
index d6ca5f1d24..c31915e7dc 100644
--- a/arch/arm/mach-rockchip/rk3368/Kconfig
+++ b/arch/arm/mach-rockchip/rk3368/Kconfig
@@ -49,7 +49,7 @@ config SYS_SOC
 	default "rk3368"
 
 config SYS_MALLOC_F_LEN
-	default 0x2000
+	default 0x4000
 
 config SPL_LIBCOMMON_SUPPORT
 	default y