diff --git a/configs/M5272C3_defconfig b/configs/M5272C3_defconfig
index 87b895c..37b357d 100644
--- a/configs/M5272C3_defconfig
+++ b/configs/M5272C3_defconfig
@@ -2,6 +2,7 @@
 CONFIG_SYS_TEXT_BASE=0xFFE00000
 CONFIG_ENV_SIZE=0x2000
 CONFIG_ENV_SECT_SIZE=0x2000
+CONFIG_SYS_MALLOC_LEN=0x40000
 CONFIG_DEFAULT_DEVICE_TREE="M5272C3"
 CONFIG_TARGET_M5272C3=y
 CONFIG_SYS_LOAD_ADDR=0x20000