diff --git a/configs/P1020RDB-PD_SPIFLASH_defconfig b/configs/P1020RDB-PD_SPIFLASH_defconfig
index daed834..a59ec50 100644
--- a/configs/P1020RDB-PD_SPIFLASH_defconfig
+++ b/configs/P1020RDB-PD_SPIFLASH_defconfig
@@ -30,6 +30,7 @@
 CONFIG_BOARD_EARLY_INIT_R=y
 # CONFIG_MISC_INIT_R is not set
 # CONFIG_SPL_FRAMEWORK is not set
+CONFIG_SPL_MAX_SIZE=0x20000
 CONFIG_SPL_SPI_BOOT=y
 CONFIG_SPL_FLUSH_IMAGE=y
 CONFIG_SPL_ENV_SUPPORT=y