diff --git a/configs/rcar3_ulcb_defconfig b/configs/rcar3_ulcb_defconfig
index 341abe4..8eb703a 100644
--- a/configs/rcar3_ulcb_defconfig
+++ b/configs/rcar3_ulcb_defconfig
@@ -86,6 +86,7 @@
 CONFIG_SYS_FLASH_PROTECTION=y
 CONFIG_SYS_FLASH_CFI=y
 CONFIG_RENESAS_RPC_HF=y
+CONFIG_SYS_MAX_FLASH_SECT=256
 CONFIG_SYS_MAX_FLASH_BANKS_DETECT=y
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SPI_FLASH_SPANSION=y