diff --git a/target/linux/ath79/base-files/lib/upgrade/platform.sh b/target/linux/ath79/base-files/lib/upgrade/platform.sh
index f4fca06384..10756abbaf 100644
--- a/target/linux/ath79/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ath79/base-files/lib/upgrade/platform.sh
@@ -45,11 +45,11 @@ platform_do_upgrade() {
 		redboot_fis_do_upgrade "$1" vmlinux_2
 		;;
 	jjplus,ja76pf2)
-		redboot_fis_do_upgrade "$1" linux
+		echo "Sysupgrade disabled due bug FS#2428"
 		;;
 	ubnt,routerstation|\
 	ubnt,routerstation-pro)
-		redboot_fis_do_upgrade "$1" kernel
+		echo "Sysupgrade disabled due bug FS#2428"
 		;;
 	*)
 		default_do_upgrade "$1"