diff --git a/configs/M5329AFEE_defconfig b/configs/M5329AFEE_defconfig
index 91d9058..2c0ef9d 100644
--- a/configs/M5329AFEE_defconfig
+++ b/configs/M5329AFEE_defconfig
@@ -2,6 +2,7 @@
 CONFIG_SYS_TEXT_BASE=0x0
 CONFIG_ENV_SIZE=0x2000
 CONFIG_ENV_SECT_SIZE=0x2000
+CONFIG_SYS_MALLOC_LEN=0x20000
 CONFIG_DEFAULT_DEVICE_TREE="M5329AFEE"
 CONFIG_TARGET_M5329EVB=y
 CONFIG_SYS_LOAD_ADDR=0x40010000