diff --git a/configs/microchip_sam9x60ek_mmc_dev_defconfig b/configs/microchip_sam9x60ek_mmc_dev_defconfig
index da1bd33dd3..00ccd784b5 100644
--- a/configs/microchip_sam9x60ek_mmc_dev_defconfig
+++ b/configs/microchip_sam9x60ek_mmc_dev_defconfig
@@ -7,6 +7,7 @@ BR2_TARGET_GENERIC_HOSTNAME="sam9x60ek"
 BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y
 BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
 BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/microchip/sam9x60ek_mmc/genimage.cfg"
+BR2_TARGET_ROOTFS_EXT2_SIZE=120M
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
 BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,linux4microchip,linux,linux4microchip-2021.10)/linux-linux4microchip-2021.10.tar.gz"