diff --git a/app.py b/app.py
index daab203..3394751 100644
--- a/app.py
+++ b/app.py
@@ -86,12 +86,12 @@ def calc_token(cid, uid):
     return RtcTokenBuilder.buildTokenWithUid(C.app_id, C.app_certificate, cid, uid, Role_Attendee, privilegeExpiredTs)
 
 
-def calc_rtm_token(name):
+def calc_rtm_token(username):
     expireTimeInSeconds = 3600 * 5
     currentTimestamp = int(time.time())
     privilegeExpiredTs = currentTimestamp + expireTimeInSeconds
 
-    return RtmTokenBuilder.buildToken(C.app_id, C.app_certificate, name, Role_Rtm_User, privilegeExpiredTs)
+    return RtmTokenBuilder.buildToken(C.app_id, C.app_certificate, username, Role_Rtm_User, privilegeExpiredTs)
 
 
 @app.route('/call/')
@@ -99,7 +99,7 @@ def calc_rtm_token(name):
 def homepage():
     me = current_user
     app_id = C.app_id
-    rtm_token = calc_rtm_token(me.acct or me.disp)
+    rtm_token = calc_rtm_token(me.acct)
     _cid = request.args.get('cid')
 
     if _cid and not rds.hexists(RDS_KEY, _cid):
diff --git a/templates/homepage.html b/templates/homepage.html
index a9dc071..14951bb 100644
--- a/templates/homepage.html
+++ b/templates/homepage.html
@@ -103,7 +103,7 @@
   <script type="text/javascript">
     window._APPID = "{{app_id}}";
     window._RTM_TOKEN = "{{rtm_token}}";
-    window._MY_NAME = "{{me.acct or me.disp}}";
+    window._MY_NAME = "{{me.acct}}";
     window._UID = {{me.id}};
   </script>
   <script src="https://cdn.jsdelivr.net/npm/jquery@3.5.1/dist/jquery.min.js" integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>