diff --git a/configs/T1023RDB_SECURE_BOOT_defconfig b/configs/T1023RDB_SECURE_BOOT_defconfig
index 5ddaac6..34fe6e5 100644
--- a/configs/T1023RDB_SECURE_BOOT_defconfig
+++ b/configs/T1023RDB_SECURE_BOOT_defconfig
@@ -17,6 +17,8 @@
 CONFIG_CMD_GREPENV=y
 CONFIG_CMD_MEMTEST=y
 CONFIG_SYS_ALT_MEMTEST=y
+CONFIG_SYS_MEMTEST_START=0x00200000
+CONFIG_SYS_MEMTEST_END=0x00400000
 CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_SF=y