diff --git a/print.py b/print.py
index 1faf65a..fd142ef 100644
--- a/print.py
+++ b/print.py
@@ -2,6 +2,7 @@
 
 import socket
 import json
+import os
 from flask import Flask, render_template
 
 CheckPrinterOnline = '7e4d3630312053310d0a'
@@ -9,7 +10,10 @@ MachingInfo = "7e4d3131350d0a"
 GetPrintPercent = "7e4d32370d0a"
 GetPrinterTemp = "7e4d3130350d0a"
 
-HOST = '10.1.1.83'  # The server's hostname or IP address
+if os.environ.get('IPADDR') == None:
+    print("IPADDR environment variable not set please set to printer IP")
+    SystemExit()
+HOST = os.environ.get('IPADDR')  # The server's hostname or IP address
 PORT = 8899        # The port used by the server
 
 application = Flask(__name__)