diff --git a/account/middleware.py b/account/middleware.py
index 245c32a0..3177da92 100644
--- a/account/middleware.py
+++ b/account/middleware.py
@@ -1,3 +1,4 @@
+from django.conf import settings
 from django.db import connection
 from django.utils.timezone import now
 from django.utils.deprecation import MiddlewareMixin
@@ -19,10 +20,11 @@ class APITokenAuthMiddleware(MiddlewareMixin):
 
 class SessionRecordMiddleware(MiddlewareMixin):
     def process_request(self, request):
+        request.ip = request.META.get(settings.IP_HEADER, request.META.get("REMOTE_ADDR"))
         if request.user.is_authenticated():
             session = request.session
             session["user_agent"] = request.META.get("HTTP_USER_AGENT", "")
-            session["ip"] = request.META.get("HTTP_X_REAL_IP", request.META.get("REMOTE_ADDR"))
+            session["ip"] = request.ip
             session["last_activity"] = now()
             user_sessions = request.user.session_keys
             if session.session_key not in user_sessions:
diff --git a/conf/tests.py b/conf/tests.py
index c6a49afc..dce80c68 100644
--- a/conf/tests.py
+++ b/conf/tests.py
@@ -1,6 +1,7 @@
 import hashlib
 from unittest import mock
 
+from django.conf import settings
 from django.utils import timezone
 
 from options.options import SysOptions
@@ -87,7 +88,7 @@ class JudgeServerHeartbeatTest(APITestCase):
         self.token = "test"
         self.hashed_token = hashlib.sha256(self.token.encode("utf-8")).hexdigest()
         SysOptions.judge_server_token = self.token
-        self.headers = {"HTTP_X_JUDGE_SERVER_TOKEN": self.hashed_token, "HTTP_X_REAL_IP": "1.2.3.4"}
+        self.headers = {"HTTP_X_JUDGE_SERVER_TOKEN": self.hashed_token, settings.IP_HEADER: "1.2.3.4"}
 
     def test_new_heartbeat(self):
         resp = self.client.post(self.url, data=self.data, **self.headers)
diff --git a/conf/views.py b/conf/views.py
index 62c1d350..a1ddbb19 100644
--- a/conf/views.py
+++ b/conf/views.py
@@ -136,7 +136,7 @@ class JudgeServerHeartbeatAPI(CSRFExemptAPIView):
             server.memory_usage = data["memory"]
             server.cpu_usage = data["cpu"]
             server.service_url = data["service_url"]
-            server.ip = request.META["HTTP_X_REAL_IP"]
+            server.ip = request.ip
             server.last_heartbeat = timezone.now()
             server.save()
         except JudgeServer.DoesNotExist:
diff --git a/deploy/nginx/api_proxy.conf b/deploy/nginx/api_proxy.conf
index 631103d9..cc508c8e 100644
--- a/deploy/nginx/api_proxy.conf
+++ b/deploy/nginx/api_proxy.conf
@@ -1,5 +1,6 @@
 proxy_pass http://backend;
 proxy_set_header X-Real-IP __IP_HEADER__;
-proxy_set_header Host $http_host;client_max_body_size 200M;
+proxy_set_header Host $http_host;
+client_max_body_size 200M;
 proxy_http_version 1.1;
 proxy_set_header Connection '';
\ No newline at end of file
diff --git a/oj/settings.py b/oj/settings.py
index 055c0558..7656f536 100644
--- a/oj/settings.py
+++ b/oj/settings.py
@@ -207,4 +207,6 @@ CELERY_ACCEPT_CONTENT = ["json"]
 CELERY_TASK_SERIALIZER = "json"
 RAVEN_CONFIG = {
     'dsn': 'https://b200023b8aed4d708fb593c5e0a6ad3d:1fddaba168f84fcf97e0d549faaeaff0@sentry.io/263057'
-}
\ No newline at end of file
+}
+
+IP_HEADER = "HTTP_X_REAL_IP"