diff --git a/configs/imx7_cm_defconfig b/configs/imx7_cm_defconfig
index 75718e5..ede7380 100644
--- a/configs/imx7_cm_defconfig
+++ b/configs/imx7_cm_defconfig
@@ -21,6 +21,7 @@
 CONFIG_IMX_RDC=y
 CONFIG_IMX_BOOTAUX=y
 CONFIG_DISTRO_DEFAULTS=y
+CONFIG_SYS_MONITOR_LEN=409600
 CONFIG_BOOTCOMMAND="run boot${boot-mode}"
 CONFIG_DEFAULT_FDT_FILE="ask"
 # CONFIG_BOARD_EARLY_INIT_F is not set