diff --git a/nodejs-mini-message-board/src/app.js b/nodejs-mini-message-board/src/app.js
index 37821be..8df08c1 100644
--- a/nodejs-mini-message-board/src/app.js
+++ b/nodejs-mini-message-board/src/app.js
@@ -17,7 +17,7 @@ app.use(express.urlencoded({ extended: true }));
 //Logging
 app.use((req, res, next) => {
   req.time = new Date(Date.now()).toISOString();
-  const clientIp = req.header("cf_connecting_ip") || req.socket.remoteAddress;
+  const clientIp = req.header("cf-connecting-ip") || req.socket.remoteAddress;
   console.log(req.time, req.method, req.hostname, req.path, clientIp);
   next();
 });