diff --git a/configs/trats_defconfig b/configs/trats_defconfig
index 931c69b..64cd5dc 100644
--- a/configs/trats_defconfig
+++ b/configs/trats_defconfig
@@ -33,6 +33,7 @@
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
 CONFIG_DFU_MMC=y
+CONFIG_SYS_DFU_DATA_BUF_SIZE=0x2000000
 CONFIG_DM_I2C_GPIO=y
 CONFIG_SYS_I2C_S3C24X0=y
 CONFIG_MMC_DW=y