diff --git a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
index ced42ed..0e30a60 100755
--- a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
@@ -176,6 +176,7 @@ platform_check_image() {
 	dir-835-a1 | \
 	dragino2 | \
 	esr1750 | \
+	esr900 | \
 	ew-dorin | \
 	ew-dorin-router | \
 	hiwifi-hc6361 | \