diff --git a/target/linux/ipq806x/image/Makefile b/target/linux/ipq806x/image/Makefile
index c082a77080..268c72381a 100644
--- a/target/linux/ipq806x/image/Makefile
+++ b/target/linux/ipq806x/image/Makefile
@@ -366,15 +366,12 @@ define Device/ruijie_rg-mtfi-m520
 	SOC := qcom-ipq8064
 	KERNEL_SIZE := 4096k
 	BLOCKSIZE := 64k
-	BOARD_NAME := rg-mtfi-m520
 	KERNEL_SUFFIX := -uImage
-	KERNEL = kernel-bin | append-dtb | uImage none | pad-to $${KERNEL_SIZE}
+	KERNEL = kernel-bin | append-dtb | uImage none | pad-to $$(KERNEL_SIZE)
 	KERNEL_NAME := zImage
 	IMAGES := factory.bin sysupgrade.bin mmcblk0p2-kernel.bin mmcblk0p3-rootfs.bin
 	IMAGE/factory.bin := qsdk-ipq-factory-mmc
-	IMAGE/sysupgrade.bin/squashfs := append-rootfs | pad-to $$$${BLOCKSIZE} | sysupgrade-tar rootfs=$$$$@ | append-metadata
-	IMAGE/mmcblk0p2-kernel.bin := append-kernel | pad-to $$$${KERNEL_SIZE}
-	IMAGE/mmcblk0p3-rootfs.bin := append-rootfs | pad-rootfs
+	IMAGE/sysupgrade.bin/squashfs := append-rootfs | pad-to $$$$(BLOCKSIZE) | sysupgrade-tar rootfs=$$$$@ | append-metadata
 	DEVICE_PACKAGES := ath10k-firmware-qca988x-ct e2fsprogs f2fs-tools \
 	kmod-hwmon-lm75 kmod-fs-ext4 kmod-fs-f2fs kmod-rtc-pcf8563 losetup
 endef