diff --git a/server/hr50_rd_server.py b/server/hr50_rd_server.py
index ebe1c49..814637b 100644
--- a/server/hr50_rd_server.py
+++ b/server/hr50_rd_server.py
@@ -10,6 +10,7 @@ app = Flask(__name__)
 
 shell_cmd = "./scripts/toggle_antenna.sh"
 serial_cmd = "hrtu1"
+serial_cmd_msg = "Tune"
 
 # The serial/USB port the HR50 is connected to
 serial_port = '/dev/ttyUSB0'
@@ -134,12 +135,13 @@ def get_info():
 def background_loop():
     global cmd_rcvd
     global msg_time
+    global serial_cmd_msg
     threading.Timer(3.0, background_loop).start()
     if cmd_rcvd != "":
         ret = ""
         try:
             send_cmd_via_serial(cmd_rcvd)
-            vlcd['RET'] = 'Tune'
+            vlcd['RET'] = serial_cmd_msg
             msg_time = current_milli_time()
         except Exception as e:
             ret = "ERROR"