diff --git a/applications/luci-app-natmap/htdocs/luci-static/resources/view/natmap.js b/applications/luci-app-natmap/htdocs/luci-static/resources/view/natmap.js
index 14dea3aa1941..e837fbf2a9df 100644
--- a/applications/luci-app-natmap/htdocs/luci-static/resources/view/natmap.js
+++ b/applications/luci-app-natmap/htdocs/luci-static/resources/view/natmap.js
@@ -91,7 +91,7 @@ return view.extend({
 		o.rmempty = false;
 
 		o = s.option(form.Value, 'port', _('Bind port'));
-		o.datatype = 'port';
+		o.datatype = 'portrange';
 		o.rmempty = false;
 
 		o = s.option(form.Flag, '_forward_mode', _('Forward mode'));