--- Features.js
+++ Features.js
@@ -53,6 +53,8 @@ module.exports = Features = {
         return Settings.apis.references.url != null
       case 'saml':
         return Settings.enableSaml
+      case 'link-url':
+        return Settings.apis.linkedUrlProxy && Settings.apis.linkedUrlProxy.url
       default:
         throw new Error(`unknown feature: ${feature}`)
     }
