diff --git a/call_manager.py b/call_manager.py
index 565e263..fb0108d 100644
--- a/call_manager.py
+++ b/call_manager.py
@@ -11,8 +11,8 @@ OP_OK = 'OK'.encode()
 OP_ERROR = 'ERROR'.encode()
 
 def exec_mumble(deaf: bool):
-    subprocess.run(['mumble', 'rpc', 'deaf' if deaf else 'undeaf'])
-    subprocess.run(['mumble', 'rpc', 'mute' if deaf else 'unmute'])
+    subprocess.run(['xvfb-run', 'mumble', 'rpc', 'deaf' if deaf else 'undeaf'])
+    subprocess.run(['xvfb-run', 'mumble', 'rpc', 'mute' if deaf else 'unmute'])
 
 def deaf_mumble():
     exec_mumble(True)
diff --git a/intercom.py b/intercom.py
index a17b2f9..20d246a 100644
--- a/intercom.py
+++ b/intercom.py
@@ -5,6 +5,7 @@ from threading import Thread
 import socket
 import yaml
 import time
+import subprocess
 
 from call_manager import CallManager, NO_CALL, INCOMING_CALL, OUTGOING_CALL, OP_CALL, OP_HANG, OP_PING, OP_OK, OP_ERROR
 
@@ -73,6 +74,8 @@ def check_status(station):
             s.close()
         time.sleep(CHECK_STATUS_INTERVAL)
 
+# Start mumble client
+subprocess.run(['xvfb-run', 'mumble', 'mumble://uli@miki'])
 
 # Start thread to wait for incoming hang petitions.
 thread_listen = Thread(target=listen, args=(callManager,))