diff --git a/configs/3c120_defconfig b/configs/3c120_defconfig
index b501786..0a69871 100644
--- a/configs/3c120_defconfig
+++ b/configs/3c120_defconfig
@@ -1,6 +1,7 @@
 CONFIG_NIOS2=y
 CONFIG_SYS_CONFIG_NAME="3c120_devboard"
 CONFIG_SYS_MALLOC_LEN=0x20000
+CONFIG_SYS_MALLOC_F_LEN=0x400
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_ENV_SIZE=0x20000
 CONFIG_ENV_SECT_SIZE=0x20000