diff --git a/Kconfig b/Kconfig
index 0ee3068b9a..b45e60a75b 100644
--- a/Kconfig
+++ b/Kconfig
@@ -263,6 +263,7 @@ config SYS_MALLOC_F_LEN
 
 config SYS_MALLOC_LEN
 	hex "Define memory for Dynamic allocation"
+	default 0x4000000 if SANDBOX
 	default 0x2000000 if ARCH_ROCKCHIP || ARCH_OMAP2PLUS || ARCH_MESON
 	default 0x200000 if ARCH_BMIPS || X86
 	default 0x120000 if MACH_SUNIV
diff --git a/configs/sandbox64_defconfig b/configs/sandbox64_defconfig
index 88f9ecbb7f..a13fa2e2c5 100644
--- a/configs/sandbox64_defconfig
+++ b/configs/sandbox64_defconfig
@@ -1,5 +1,4 @@
 CONFIG_SYS_TEXT_BASE=0
-CONFIG_SYS_MALLOC_LEN=0x2000000
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_ENV_SIZE=0x2000
 CONFIG_DEFAULT_DEVICE_TREE="sandbox64"
diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index cb8d590eb6..4d3e4f317f 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -1,5 +1,4 @@
 CONFIG_SYS_TEXT_BASE=0
-CONFIG_SYS_MALLOC_LEN=0x2000000
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_ENV_SIZE=0x2000
 CONFIG_DEFAULT_DEVICE_TREE="sandbox"
diff --git a/configs/sandbox_flattree_defconfig b/configs/sandbox_flattree_defconfig
index 24b272068a..d799f7ddca 100644
--- a/configs/sandbox_flattree_defconfig
+++ b/configs/sandbox_flattree_defconfig
@@ -1,5 +1,4 @@
 CONFIG_SYS_TEXT_BASE=0
-CONFIG_SYS_MALLOC_LEN=0x2000000
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_ENV_SIZE=0x2000
 CONFIG_DEFAULT_DEVICE_TREE="sandbox"
diff --git a/configs/sandbox_noinst_defconfig b/configs/sandbox_noinst_defconfig
index 9eefe4f105..c9430da0f0 100644
--- a/configs/sandbox_noinst_defconfig
+++ b/configs/sandbox_noinst_defconfig
@@ -1,5 +1,4 @@
 CONFIG_SYS_TEXT_BASE=0x200000
-CONFIG_SYS_MALLOC_LEN=0x2000000
 CONFIG_SPL_GPIO=y
 CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
diff --git a/configs/sandbox_spl_defconfig b/configs/sandbox_spl_defconfig
index 0092fea76b..13a76e89ea 100644
--- a/configs/sandbox_spl_defconfig
+++ b/configs/sandbox_spl_defconfig
@@ -1,5 +1,4 @@
 CONFIG_SYS_TEXT_BASE=0x200000
-CONFIG_SYS_MALLOC_LEN=0x2000000
 CONFIG_SPL_GPIO=y
 CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y