diff --git a/target/linux/ath79/image/common-mikrotik.mk b/target/linux/ath79/image/common-mikrotik.mk
index ce349b60b1d..b37c8b71970 100644
--- a/target/linux/ath79/image/common-mikrotik.mk
+++ b/target/linux/ath79/image/common-mikrotik.mk
@@ -18,4 +18,8 @@ endef
 define Device/mikrotik_nand
   $(Device/mikrotik)
   IMAGE/sysupgrade.bin = append-kernel | sysupgrade-tar | append-metadata
+  DEVICE_COMPAT_MESSAGE := \
+       NAND images switched to yafut. If running older image, reinstall from initramfs.
+  DEVICE_COMPAT_VERSION := 1.1
+
 endef