diff --git a/packages/node_modules/node-red/settings.js b/packages/node_modules/node-red/settings.js
index 8be7bf9bd..3195f70ef 100644
--- a/packages/node_modules/node-red/settings.js
+++ b/packages/node_modules/node-red/settings.js
@@ -145,13 +145,20 @@ module.exports = {
     //  key: fs.readFileSync('privkey.pem'),
     //  cert: fs.readFileSync('cert.pem')
     //},
-    // This property can also be a function (e.g. to automatic refresh the https settings):
+    // This property can also be a function (e.g. to automatic refresh the https settings synchronously):
     //https: function() {
     //     return {
     //         key: fs.readFileSync('privkey.pem'),
     //         cert: fs.readFileSync('cert.pem')
     //     }
     //},
+    // This property can also be a promise (e.g. to automatic refresh the https settings asynchronously):
+    //https: function() {
+    //    return Promise.resolve({
+    //        key: fs.readFileSync('privkey.pem'),
+    //        cert: fs.readFileSync('cert.pem')
+    //    });
+    //},
 
     // The following property can be used to refresh the https settings at regular time intervals (seconds).
     // Prerequisite: the 'https' property should be enabled (based on a function)!