diff --git a/configs/lager_defconfig b/configs/lager_defconfig
index d8cae4f..cdd72de 100644
--- a/configs/lager_defconfig
+++ b/configs/lager_defconfig
@@ -16,6 +16,7 @@
 CONFIG_SPL_SPI_FLASH_SUPPORT=y
 CONFIG_SPL_SPI_SUPPORT=y
 CONFIG_DEFAULT_DEVICE_TREE="r8a7790-lager-u-boot"
+CONFIG_NR_DRAM_BANKS=1
 CONFIG_FIT=y
 CONFIG_BOOTDELAY=3
 CONFIG_VERSION_VARIABLE=y