diff --git a/deploy/web_server/web_server.py b/deploy/web_server/web_server.py
index 07715a6..b3a6442 100644
--- a/deploy/web_server/web_server.py
+++ b/deploy/web_server/web_server.py
@@ -83,7 +83,7 @@ async def server_error(request: Request, exc: HTTPException):
 class LogUserIPMiddleware(BaseHTTPMiddleware):
     async def dispatch(self, request, call_next):
         start_time = time.time()
-        client_ip = request.headers["CF-Connecting-IP"]
+        client_ip = request.headers.get("CF-Connecting-IP", request.client.host)
         client_path = request.url.path
 
         match client_path: