diff --git a/configs/Sinlinx_SinA31s_defconfig b/configs/Sinlinx_SinA31s_defconfig
index 238b007..a1d62fc 100644
--- a/configs/Sinlinx_SinA31s_defconfig
+++ b/configs/Sinlinx_SinA31s_defconfig
@@ -10,6 +10,7 @@
 CONFIG_USB1_VBUS_PIN=""
 CONFIG_USB2_VBUS_PIN=""
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_SYS_MONITOR_LEN=786432
 CONFIG_PHY_REALTEK=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_MII=y