diff --git a/README.md b/README.md
index 36e270f2..227897f3 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ srv = net.createServer(net.TCP)
 srv:listen(80, function(conn)
 	conn:on("receive", function(sck, payload)
 		print(payload)
-		sck:send("<h1> Hello, NodeMCU.</h1>")
+		sck:send("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n<h1> Hello, NodeMCU.</h1>")
 	end)
 	conn:on("sent", function(sck) sck:close() end)
 end)
diff --git a/docs/en/index.md b/docs/en/index.md
index bc2e7ca1..c8731c50 100644
--- a/docs/en/index.md
+++ b/docs/en/index.md
@@ -11,11 +11,11 @@ The NodeMCU programming model is similar to that of [Node.js](https://en.wikiped
 -- a simple HTTP server
 srv = net.createServer(net.TCP)
 srv:listen(80, function(conn)
-	conn:on("receive", function(conn, payload)
+	conn:on("receive", function(sck, payload)
 		print(payload)
-		conn:send("<h1> Hello, NodeMCU.</h1>")
+		sck:send("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n<h1> Hello, NodeMCU.</h1>")
 	end)
-	conn:on("sent", function(conn) conn:close() end)
+	conn:on("sent", function(sck) sck:close() end)
 end)
 ```
 ```lua