diff --git a/ppfun-bridge/src/ppfunMatrixBridge.js b/ppfun-bridge/src/ppfunMatrixBridge.js
index 2f5f1db..924e428 100644
--- a/ppfun-bridge/src/ppfunMatrixBridge.js
+++ b/ppfun-bridge/src/ppfunMatrixBridge.js
@@ -1,6 +1,6 @@
 "use strict";
 
-import { Bridge } from 'matrix-appservice-bridge';
+import { Logger, Bridge } from 'matrix-appservice-bridge';
 
 import parseMsg from './markdown/parse.js'
 import PPfunSocket from './ppfunsocket.js';
@@ -35,10 +35,12 @@ class PPfunMatrixBridge {
       domain,
       registration,
       controller: {
+        // auto-provision users with no additional data
         onUserQuery: (queriedUser) => {},
         onEvent: this.recMatrix.bind(this),
       }
     });
+    Logger.configure({ console: "off", json: false });
     this.port = port;
     this.domain = domain;
     this.mediaUrl = mediaUrl;
@@ -284,11 +286,13 @@ class PPfunMatrixBridge {
    * make a user admin in a room
    */
   async makeAdminInRoom(userId, roomId) {
-    try {
-      const userIntent = this.matrixBridge.getIntent(userId);
-      await userIntent.join(roomId);
-    } catch (err) {
-      console.warn(`Couldn't join room ${roomId} with user ${userId}: ${err.message}`);
+    if (userId.startsWith(`@${this.prefix}_`)) {
+      try {
+        const userIntent = this.matrixBridge.getIntent(userId);
+        await userIntent.join(roomId);
+      } catch (err) {
+        console.warn(`Couldn't join room ${roomId} with user ${userId}: ${err.message}`);
+      }
     }
     try {
       const intent = this.matrixBridge.getIntent();