diff --git a/modules/luci-mod-status/htdocs/luci-static/resources/view/status/include/40_dhcp.js b/modules/luci-mod-status/htdocs/luci-static/resources/view/status/include/40_dhcp.js
index 9a82cc3d88..b7f84c66e0 100644
--- a/modules/luci-mod-status/htdocs/luci-static/resources/view/status/include/40_dhcp.js
+++ b/modules/luci-mod-status/htdocs/luci-static/resources/view/status/include/40_dhcp.js
@@ -69,7 +69,8 @@ return baseclass.extend({
 
 		uci.set('dhcp', cfg, 'name', lease.hostname);
 		uci.set('dhcp', cfg, 'duid', [duid_iaid]);
-		uci.set('dhcp', cfg, 'mac', [lease.macaddr]);
+		if (lease.macaddr)
+			uci.set('dhcp', cfg, 'mac', [lease.macaddr.toUpperCase()]);
 		if (ip6arr)
 			uci.set('dhcp', cfg, 'hostid', (ip6arr[6] * 0xFFFF + ip6arr[7]).toString(16));