diff --git a/configs/T1024RDB_SPIFLASH_defconfig b/configs/T1024RDB_SPIFLASH_defconfig
index 62bb404..320f22e 100644
--- a/configs/T1024RDB_SPIFLASH_defconfig
+++ b/configs/T1024RDB_SPIFLASH_defconfig
@@ -25,6 +25,7 @@
 CONFIG_PCIE3=y
 CONFIG_SYS_MEMTEST_START=0x00200000
 CONFIG_SYS_MEMTEST_END=0x00400000
+CONFIG_SYS_MONITOR_LEN=786432
 CONFIG_MP=y
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y