diff --git a/src/matrix-server-config.js b/src/matrix-server-config.js
index 59d0cf9..449d9f5 100644
--- a/src/matrix-server-config.js
+++ b/src/matrix-server-config.js
@@ -455,7 +455,10 @@ module.exports = function(RED) {
 
             matrixClient.login(
                 'm.login.password', {
-                    user: userId,
+                    identifier: {
+                        type: 'm.id.user',
+                        user: userId,
+                    },
                     password: password,
                     initial_device_display_name: displayName
                 })
@@ -534,4 +537,4 @@ module.exports = function(RED) {
         localStorage.setItem('my_device_id', deviceId);
         return true;
     }
-}
\ No newline at end of file
+}