diff --git a/configs/durian_defconfig b/configs/durian_defconfig
index 56b29c4..8ce80f9 100644
--- a/configs/durian_defconfig
+++ b/configs/durian_defconfig
@@ -3,6 +3,7 @@
 CONFIG_TARGET_DURIAN=y
 CONFIG_SYS_TEXT_BASE=0x500000
 CONFIG_SYS_MALLOC_LEN=0x101000
+CONFIG_SYS_MALLOC_F_LEN=0x400
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_ENV_SIZE=0x1000
 CONFIG_DEFAULT_DEVICE_TREE="phytium-durian"