diff --git a/configs/at91sam9n12ek_spiflash_defconfig b/configs/at91sam9n12ek_spiflash_defconfig
index a12b3ff..372b8ab 100644
--- a/configs/at91sam9n12ek_spiflash_defconfig
+++ b/configs/at91sam9n12ek_spiflash_defconfig
@@ -17,6 +17,7 @@
 CONFIG_DEBUG_UART=y
 CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
 CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x303f00
+CONFIG_SYS_MONITOR_LEN=524288
 CONFIG_SPI_BOOT=y
 CONFIG_BOOTDELAY=3
 CONFIG_USE_BOOTCOMMAND=y