diff --git a/configs/j721s2_evm_r5_defconfig b/configs/j721s2_evm_r5_defconfig
index c197504eec..6910705d59 100644
--- a/configs/j721s2_evm_r5_defconfig
+++ b/configs/j721s2_evm_r5_defconfig
@@ -178,3 +178,4 @@ CONFIG_FS_FAT_MAX_CLUSTSIZE=16384
 CONFIG_PANIC_HANG=y
 CONFIG_LIB_RATIONAL=y
 CONFIG_SPL_LIB_RATIONAL=y
+CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN=0x140000