diff --git a/mqtt_srv.py b/mqtt_srv.py
index cd8405d..4182b58 100755
--- a/mqtt_srv.py
+++ b/mqtt_srv.py
@@ -696,10 +696,10 @@ def on_message(client, userdata, msg):
                     myCmd = "sudo XDG_RUNTIME_DIR=/run/user/1000 -u jd amixer sget Master"
                     writeLog(myCmd)
                     output = subprocess.Popen(myCmd, shell=True)
-                    cmd = ["sudo", "XDG_RUNTIME_DIR=/run/user/1000", "-u", "jd", "amixer", "sget", "Master"]
+                    cmd = """sudo XDG_RUNTIME_DIR=/run/user/1000 -u jd amixer sget Master | awk -F'[][]' '/Left:/ { print $2 }'"""
 
                     result = subprocess.run(
-                        " ".join(cmd),
+                        cmd,
                         shell=True,
                         capture_output=True,
                         text=True