diff --git a/configs/imx6ul_isiot_emmc_defconfig b/configs/imx6ul_isiot_emmc_defconfig
index f5667bb..1d21455 100644
--- a/configs/imx6ul_isiot_emmc_defconfig
+++ b/configs/imx6ul_isiot_emmc_defconfig
@@ -11,6 +11,7 @@
 CONFIG_ENV_OFFSET=0x100000
 CONFIG_MX6UL=y
 CONFIG_TARGET_MX6UL_ENGICAM=y
+CONFIG_SYS_MALLOC_LEN=0x1000000
 CONFIG_DEFAULT_DEVICE_TREE="imx6ul-isiot-emmc"
 CONFIG_SPL_TEXT_BASE=0x00908000
 CONFIG_SPL_SERIAL_SUPPORT=y