diff --git a/configs/rcar3_ulcb_defconfig b/configs/rcar3_ulcb_defconfig
index f462bab..43361a2 100644
--- a/configs/rcar3_ulcb_defconfig
+++ b/configs/rcar3_ulcb_defconfig
@@ -14,6 +14,7 @@
 CONFIG_TARGET_ULCB=y
 CONFIG_SYS_LOAD_ADDR=0x58000000
 CONFIG_REMAKE_ELF=y
+CONFIG_SYS_MONITOR_LEN=1048576
 CONFIG_FIT=y
 CONFIG_SUPPORT_RAW_INITRD=y
 CONFIG_SYS_MONITOR_BASE=0x00000000