diff --git a/configs/hihope_rzg2_defconfig b/configs/hihope_rzg2_defconfig
index 41091be..f0d07fc 100644
--- a/configs/hihope_rzg2_defconfig
+++ b/configs/hihope_rzg2_defconfig
@@ -4,6 +4,7 @@
 CONFIG_SYS_TEXT_BASE=0x50000000
 CONFIG_ENV_SIZE=0x20000
 CONFIG_ENV_OFFSET=0xFFFE0000
+CONFIG_SYS_MALLOC_LEN=0x4000000
 CONFIG_DM_GPIO=y
 CONFIG_DEFAULT_DEVICE_TREE="r8a774a1-hihope-rzg2m-u-boot"
 CONFIG_RCAR_GEN3=y