diff --git a/mqtt_srv.py b/mqtt_srv.py
index 0e6994f..5731d63 100755
--- a/mqtt_srv.py
+++ b/mqtt_srv.py
@@ -676,9 +676,9 @@ def on_message(client, userdata, msg):
                     myCmd =f'powershell "& ""c:\\Program Files\\jaydee\\vol_control.ps1""" 1'
             else:
                 if myObj['target'] == "start":     
-                    myCmd =f'amixer set Master 100%'
+                    myCmd =f'amixer set Master mute'
                 else:
-                    myCmd =f'amixer set Master 20%'
+                    myCmd =f'amixer set Master unmute'
                 status, output = subprocess.getstatusoutput(myCmd)
             writeLog(myCmd)
             output = subprocess.Popen(myCmd, shell=True)