diff --git a/target/linux/mediatek/image/filogic.mk b/target/linux/mediatek/image/filogic.mk
index c675742d01..ea1e50c6e8 100644
--- a/target/linux/mediatek/image/filogic.mk
+++ b/target/linux/mediatek/image/filogic.mk
@@ -652,11 +652,15 @@ define Device/xiaomi_mi-router-wr30u-112m-nmbm
   UBINIZE_OPTS := -E 5
   BLOCKSIZE := 128k
   PAGESIZE := 2048
+  IMAGE_SIZE := 114688k
+  KERNEL_IN_UBI := 1
   DEVICE_PACKAGES := kmod-mt7981-firmware mt7981-wo-firmware
 ifneq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),)
   ARTIFACTS := initramfs-factory.ubi
   ARTIFACT/initramfs-factory.ubi := append-image-stage initramfs-kernel.bin | ubinize-kernel
 endif
+  IMAGES += factory.bin
+  IMAGE/factory.bin := append-ubi | check-size $$$$(IMAGE_SIZE)
   IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
 endef
 TARGET_DEVICES += xiaomi_mi-router-wr30u-112m-nmbm