diff --git a/call_manager.py b/call_manager.py
index 3546d3c..8578b58 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.Popen(['/usr/bin/mumble', 'rpc', 'deaf' if deaf else 'undeaf'])
-    subprocess.Popen(['/usr/bin/mumble', 'rpc', 'mute' if deaf else 'unmute'])
+    subprocess.run(['/usr/bin/mumble', 'rpc', 'deaf' if deaf else 'undeaf'])
+    subprocess.run(['/usr/bin/mumble', 'rpc', 'mute' if deaf else 'unmute'])
 
 def deaf_mumble():
     exec_mumble(True)