diff --git a/files/__main__.py b/files/__main__.py
index cdea5706c8..5c4b881976 100644
--- a/files/__main__.py
+++ b/files/__main__.py
@@ -25,7 +25,7 @@ app.jinja_env.add_extension('jinja2.ext.do')
 faulthandler.enable()
 
 app.config['SECRET_KEY'] = environ.get('MASTER_KEY')
-app.config["SERVER_NAME"] = environ.get("DOMAIN").strip()
+app.config["SERVER_NAME"] = environ.get("SITE").strip()
 app.config['SEND_FILE_MAX_AGE_DEFAULT'] = 3153600
 app.config["SESSION_COOKIE_NAME"] = "session_" + environ.get("SITE_NAME").strip().lower()
 app.config['MAX_CONTENT_LENGTH'] = 100 * 1024 * 1024
diff --git a/files/classes/sub.py b/files/classes/sub.py
index ea4a320a5b..888e0b9043 100644
--- a/files/classes/sub.py
+++ b/files/classes/sub.py
@@ -8,7 +8,7 @@ from .sub_subscription import *
 import time
 
 SITE_NAME = environ.get("SITE_NAME", '').strip()
-SITE = environ.get("DOMAIN", '').strip()
+SITE = environ.get("SITE", '').strip()
 if SITE == "localhost": SITE_FULL = 'http://' + SITE
 else: SITE_FULL = 'https://' + SITE
 
diff --git a/files/helpers/const.py b/files/helpers/const.py
index 26ab3e15ca..24735dc68d 100644
--- a/files/helpers/const.py
+++ b/files/helpers/const.py
@@ -10,7 +10,7 @@ import tldextract
 from os import path
 
 
-SITE = environ.get("DOMAIN").strip()
+SITE = environ.get("SITE").strip()
 SITE_NAME = environ.get("SITE_NAME").strip()
 MASTER_KEY = environ.get("MASTER_KEY").strip()
 PROXY_URL = environ.get("PROXY_URL").strip()