diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index 27adb06bf7..f4dacba894 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -2865,6 +2865,10 @@ define Device/ubnt_edgerouter_common
 	ubnt-erx-factory-image $(KDIR)/tmp/$$(KERNEL_INITRAMFS_PREFIX)-factory.tar
   IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
   DEVICE_PACKAGES += -wpad-basic-mbedtls -uboot-envtools
+  DEVICE_COMPAT_VERSION := 2.0
+  DEVICE_COMPAT_MESSAGE :=  Partition table has been changed due to kernel size restrictions. \
+    Refer to the wiki page for instructions to migrate to the new layout: \
+    https://openwrt.org/toh/ubiquiti/edgerouter_x_er-x_ka
   DEFAULT := n
 endef