diff --git a/applications/luci-app-attendedsysupgrade/htdocs/luci-static/resources/view/attendedsysupgrade/overview.js b/applications/luci-app-attendedsysupgrade/htdocs/luci-static/resources/view/attendedsysupgrade/overview.js
index f6d31a35be..3ee99684da 100644
--- a/applications/luci-app-attendedsysupgrade/htdocs/luci-static/resources/view/attendedsysupgrade/overview.js
+++ b/applications/luci-app-attendedsysupgrade/htdocs/luci-static/resources/view/attendedsysupgrade/overview.js
@@ -255,7 +255,7 @@ function check_sysupgrade(server_url, current_version, target, board_name, packa
 					}
 				}
 			}
-			if (candidates) {
+			if (candidates.length) {
 				var m, s, o;
 
 				var mapdata = {