diff --git a/call_manager.py b/call_manager.py
index fb0108d..2cac764 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(['xvfb-run', 'mumble', 'rpc', 'deaf' if deaf else 'undeaf'])
-    subprocess.run(['xvfb-run', 'mumble', 'rpc', 'mute' if deaf else 'unmute'])
+    subprocess.Popen(['xvfb-run', 'mumble', 'rpc', 'deaf' if deaf else 'undeaf'])
+    subprocess.Popen(['xvfb-run', 'mumble', 'rpc', 'mute' if deaf else 'unmute'])
 
 def deaf_mumble():
     exec_mumble(True)
diff --git a/intercom.py b/intercom.py
index 20d246a..4b6e1e7 100644
--- a/intercom.py
+++ b/intercom.py
@@ -75,7 +75,7 @@ def check_status(station):
         time.sleep(CHECK_STATUS_INTERVAL)
 
 # Start mumble client
-subprocess.run(['xvfb-run', 'mumble', 'mumble://uli@miki'])
+subprocess.Popen(['xvfb-run', 'mumble', 'mumble://uli@miki'])
 
 # Start thread to wait for incoming hang petitions.
 thread_listen = Thread(target=listen, args=(callManager,))